TY  - JOUR
AU  - Milovanović, Bojan
AU  - Vojt, Predrag
AU  - Zindović, Budo
AU  - Kuzmanović, Vladan
AU  - Savić, Ljubodrag
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3407
AB  - This paper presents a methodology for estimation of hydrodynamic loads acting on the bottom and at the walls of a stilling basin of a stepped chute with converging walls, based on the pressure measurements at the selected points of a scale model. This is the first study of hydrodynamic loads for this type of structure, and the first one of the loads on the stilling basin walls in general. For selected flow discharges, step heights and hydraulic jump submergence ratio, the hydrodynamic pressures were measured at a significant number of points, providing the spatio-temporal distribution of relevant hydrodynamic loads. The most influential effect proved to be a convergence angle of the chute walls. Based on these measurements, appropriate regression expressions were proposed for predicting hydrodynamic loads. These expressions show good agreement with measurements, offering a reliable tool for the structural design of stepped spillway stilling basins.
PB  - MDPI
T2  - Water
T1  - Hydrodynamic Loads in a Stilling Basin of a Converging Stepped Spillway: An Experimental Study
IS  - 1
SP  - 140
VL  - 16
DO  - 10.3390/w16010140
ER  - 

@article{
author = "Milovanović, Bojan and Vojt, Predrag and Zindović, Budo and Kuzmanović, Vladan and Savić, Ljubodrag",
year = "2023",
abstract = "This paper presents a methodology for estimation of hydrodynamic loads acting on the bottom and at the walls of a stilling basin of a stepped chute with converging walls, based on the pressure measurements at the selected points of a scale model. This is the first study of hydrodynamic loads for this type of structure, and the first one of the loads on the stilling basin walls in general. For selected flow discharges, step heights and hydraulic jump submergence ratio, the hydrodynamic pressures were measured at a significant number of points, providing the spatio-temporal distribution of relevant hydrodynamic loads. The most influential effect proved to be a convergence angle of the chute walls. Based on these measurements, appropriate regression expressions were proposed for predicting hydrodynamic loads. These expressions show good agreement with measurements, offering a reliable tool for the structural design of stepped spillway stilling basins.",
publisher = "MDPI",
journal = "Water",
title = "Hydrodynamic Loads in a Stilling Basin of a Converging Stepped Spillway: An Experimental Study",
number = "1",
pages = "140",
volume = "16",
doi = "10.3390/w16010140"
}

Milovanović, B., Vojt, P., Zindović, B., Kuzmanović, V.,& Savić, L.. (2023). Hydrodynamic Loads in a Stilling Basin of a Converging Stepped Spillway: An Experimental Study. in Water
MDPI., 16(1), 140.
https://doi.org/10.3390/w16010140

Milovanović B, Vojt P, Zindović B, Kuzmanović V, Savić L. Hydrodynamic Loads in a Stilling Basin of a Converging Stepped Spillway: An Experimental Study. in Water. 2023;16(1):140.
doi:10.3390/w16010140 .

Milovanović, Bojan, Vojt, Predrag, Zindović, Budo, Kuzmanović, Vladan, Savić, Ljubodrag, "Hydrodynamic Loads in a Stilling Basin of a Converging Stepped Spillway: An Experimental Study" in Water, 16, no. 1 (2023):140,
https://doi.org/10.3390/w16010140 . .

TY  - JOUR
AU  - Ljubičić, Robert
AU  - Dal Sasso, Silvano Fortunato
AU  - Zindović, Budo
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3374
AB  - Image-based hydrological measurement techniques have surged in popularity over the last decade, with the most common type of data obtained being the open-channel surface velocity field and flow rate. The lack of a feature-rich image velocimetry software often forces practitioners to use multiple tools as part of a cumbersome workflow, which restricts the uptake of such methods and reduces the reproducibility of results. We present the free and open-source software SSIMS-Flow, which handles extraction of video frames, removal of geometric distortions, video stabilization, orthorectification, image enhancement, and velocity and flow rate estimation using the Farnebäck optical flow method improved with specific pooling techniques developed in this study. SSIMS-Flow performance is tested in two case studies and compared with direct reference values and those obtained using industry-standard PIVlab software. In low seeding and tracerless conditions, SSIMS-Flow demonstrates higher velocity estimation accuracy, while delivering several times faster computational runtime.
PB  - Elsevier
T2  - Environmental Modelling and Software
T1  - SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation
DO  - 10.1016/j.envsoft.2023.105938
ER  - 

@article{
author = "Ljubičić, Robert and Dal Sasso, Silvano Fortunato and Zindović, Budo",
year = "2023",
abstract = "Image-based hydrological measurement techniques have surged in popularity over the last decade, with the most common type of data obtained being the open-channel surface velocity field and flow rate. The lack of a feature-rich image velocimetry software often forces practitioners to use multiple tools as part of a cumbersome workflow, which restricts the uptake of such methods and reduces the reproducibility of results. We present the free and open-source software SSIMS-Flow, which handles extraction of video frames, removal of geometric distortions, video stabilization, orthorectification, image enhancement, and velocity and flow rate estimation using the Farnebäck optical flow method improved with specific pooling techniques developed in this study. SSIMS-Flow performance is tested in two case studies and compared with direct reference values and those obtained using industry-standard PIVlab software. In low seeding and tracerless conditions, SSIMS-Flow demonstrates higher velocity estimation accuracy, while delivering several times faster computational runtime.",
publisher = "Elsevier",
journal = "Environmental Modelling and Software",
title = "SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation",
doi = "10.1016/j.envsoft.2023.105938"
}

Ljubičić, R., Dal Sasso, S. F.,& Zindović, B.. (2023). SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation. in Environmental Modelling and Software
Elsevier..
https://doi.org/10.1016/j.envsoft.2023.105938

Ljubičić R, Dal Sasso SF, Zindović B. SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation. in Environmental Modelling and Software. 2023;.
doi:10.1016/j.envsoft.2023.105938 .

Ljubičić, Robert, Dal Sasso, Silvano Fortunato, Zindović, Budo, "SSIMS-Flow: Image velocimetry workbench for open-channel flow rate estimation" in Environmental Modelling and Software (2023),
https://doi.org/10.1016/j.envsoft.2023.105938 . .

TY  - CONF
AU  - Milašinović, Miloš
AU  - Todorović, Andrijana
AU  - Zindović, Budo
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3318
AB  - Hydrological and hydraulic models used for forecasting and providing reliable inputs are essential for effective water management. Throughout their application, models might produce results of unsatisfying accuracy due to many uncertainty sources. Considerable uncertainty stems from model parameters values, which are usually obtained through calibration, i.e., iterative adjustment of the parameter values to achieve the best possible fit between simulated and observed variables. Model calibration yields time-invariant parameter estimates, which can lead to poor-quality simulation outputs that cannot serve as decision support. Specifically, parameter values can be expected to vary due to secondary- or seasonal processes that are not explicitly accounted for in the model, or due to anthropogenic activity (e.g., land-use change). Therefore, models used for operational forecasting should be run with up-to-date parameter values. This necessitates frequent model recalibration, which can be quite impractical due to high time- and computational requirements of the calibration procedure. Therefore, developing fast(er) calibration algorithms could be a viable alternative. This paper explores the potential of control theory-based, tailor-made, data assimilation algorithm intended for continuous update of the parameters of hydrological and hydraulic models. The algorithm enables the parameter values to be regularly updated at each computational time step based on the dynamically assessed goodness-of-fit (GOF) performance indicator. This approach enables one-pass calibration procedure. Using this algorithm instead of traditional, iterative calibration procedure where models’ GOF is assessed at the end of the simulation, can improve efficiency and effectiveness of models’ calibration. The proposed one-pass calibration approach will be tested on two synthetic test cases, one example of a hydrological model and one example of a 1D hydraulic model.
C3  - SimHydro 2023: New modelling paradigms for water issues?, Chatou, 8-10. November 2023
T1  - Dynamic calibration in hydrologic and hydraulic modelling: exploring the potential of data assimilation for estimation of models' parameters
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3318
ER  - 

@conference{
author = "Milašinović, Miloš and Todorović, Andrijana and Zindović, Budo",
year = "2023",
abstract = "Hydrological and hydraulic models used for forecasting and providing reliable inputs are essential for effective water management. Throughout their application, models might produce results of unsatisfying accuracy due to many uncertainty sources. Considerable uncertainty stems from model parameters values, which are usually obtained through calibration, i.e., iterative adjustment of the parameter values to achieve the best possible fit between simulated and observed variables. Model calibration yields time-invariant parameter estimates, which can lead to poor-quality simulation outputs that cannot serve as decision support. Specifically, parameter values can be expected to vary due to secondary- or seasonal processes that are not explicitly accounted for in the model, or due to anthropogenic activity (e.g., land-use change). Therefore, models used for operational forecasting should be run with up-to-date parameter values. This necessitates frequent model recalibration, which can be quite impractical due to high time- and computational requirements of the calibration procedure. Therefore, developing fast(er) calibration algorithms could be a viable alternative. This paper explores the potential of control theory-based, tailor-made, data assimilation algorithm intended for continuous update of the parameters of hydrological and hydraulic models. The algorithm enables the parameter values to be regularly updated at each computational time step based on the dynamically assessed goodness-of-fit (GOF) performance indicator. This approach enables one-pass calibration procedure. Using this algorithm instead of traditional, iterative calibration procedure where models’ GOF is assessed at the end of the simulation, can improve efficiency and effectiveness of models’ calibration. The proposed one-pass calibration approach will be tested on two synthetic test cases, one example of a hydrological model and one example of a 1D hydraulic model.",
journal = "SimHydro 2023: New modelling paradigms for water issues?, Chatou, 8-10. November 2023",
title = "Dynamic calibration in hydrologic and hydraulic modelling: exploring the potential of data assimilation for estimation of models' parameters",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3318"
}

Milašinović, M., Todorović, A.,& Zindović, B.. (2023). Dynamic calibration in hydrologic and hydraulic modelling: exploring the potential of data assimilation for estimation of models' parameters. in SimHydro 2023: New modelling paradigms for water issues?, Chatou, 8-10. November 2023.
https://hdl.handle.net/21.15107/rcub_grafar_3318

Milašinović M, Todorović A, Zindović B. Dynamic calibration in hydrologic and hydraulic modelling: exploring the potential of data assimilation for estimation of models' parameters. in SimHydro 2023: New modelling paradigms for water issues?, Chatou, 8-10. November 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_grafar_3318 .

Milašinović, Miloš, Todorović, Andrijana, Zindović, Budo, "Dynamic calibration in hydrologic and hydraulic modelling: exploring the potential of data assimilation for estimation of models' parameters" in SimHydro 2023: New modelling paradigms for water issues?, Chatou, 8-10. November 2023 (2023),
https://hdl.handle.net/21.15107/rcub_grafar_3318 .

TY  - JOUR
AU  - Baselt, Ivo
AU  - Skejic, Adis
AU  - Zindović, Budo
AU  - Bender, Jens
PY  - 2023
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3123
AB  - Landmines and explosive remnants of war are still present in the Western Balkans and remain a deadly legacy of the hostilities at the end of the 20th century. Over the years, several incidents have occurred in Bosnia and Herzegovina, in Serbia, and in Croatia where intact ordnance has caused injuries and fatalities. Floods, torrential flows, and gravitational mass movements pose a particular threat. Landmines and explosive remnants of war are mobilized and displaced into previously uncontaminated areas. We first discuss the historical and technical background of this hazardous situation. We then show which hydro-morphological processes are responsible for the mobilization and displacement. We then illustrate how a prediction of the likely contaminated areas can be obtained. We show that the problem can only be tackled using a stochastic-deterministic model. However, for the eventual development of risk-hazard maps, preliminary work using laboratory experiments and field surveys is required. The article, therefore, proposes a novel approach to the problem in an international research project. The aim would be to produce risk-hazard maps that can be used by elected decision-makers, administrative authorities, and emergency personnel in affected municipalities.
PB  - MDPI, Basel, Switzerland
T2  - Geosciences
T1  - Geologically-Driven Migration of Landmines and Explosive Remnants of War—A Feature Focusing on the Western Balkans
IS  - 6
SP  - 178
VL  - 13
DO  - 10.3390/geosciences13060178
ER  - 

@article{
author = "Baselt, Ivo and Skejic, Adis and Zindović, Budo and Bender, Jens",
year = "2023",
abstract = "Landmines and explosive remnants of war are still present in the Western Balkans and remain a deadly legacy of the hostilities at the end of the 20th century. Over the years, several incidents have occurred in Bosnia and Herzegovina, in Serbia, and in Croatia where intact ordnance has caused injuries and fatalities. Floods, torrential flows, and gravitational mass movements pose a particular threat. Landmines and explosive remnants of war are mobilized and displaced into previously uncontaminated areas. We first discuss the historical and technical background of this hazardous situation. We then show which hydro-morphological processes are responsible for the mobilization and displacement. We then illustrate how a prediction of the likely contaminated areas can be obtained. We show that the problem can only be tackled using a stochastic-deterministic model. However, for the eventual development of risk-hazard maps, preliminary work using laboratory experiments and field surveys is required. The article, therefore, proposes a novel approach to the problem in an international research project. The aim would be to produce risk-hazard maps that can be used by elected decision-makers, administrative authorities, and emergency personnel in affected municipalities.",
publisher = "MDPI, Basel, Switzerland",
journal = "Geosciences",
title = "Geologically-Driven Migration of Landmines and Explosive Remnants of War—A Feature Focusing on the Western Balkans",
number = "6",
pages = "178",
volume = "13",
doi = "10.3390/geosciences13060178"
}

Baselt, I., Skejic, A., Zindović, B.,& Bender, J.. (2023). Geologically-Driven Migration of Landmines and Explosive Remnants of War—A Feature Focusing on the Western Balkans. in Geosciences
MDPI, Basel, Switzerland., 13(6), 178.
https://doi.org/10.3390/geosciences13060178

Baselt I, Skejic A, Zindović B, Bender J. Geologically-Driven Migration of Landmines and Explosive Remnants of War—A Feature Focusing on the Western Balkans. in Geosciences. 2023;13(6):178.
doi:10.3390/geosciences13060178 .

Baselt, Ivo, Skejic, Adis, Zindović, Budo, Bender, Jens, "Geologically-Driven Migration of Landmines and Explosive Remnants of War—A Feature Focusing on the Western Balkans" in Geosciences, 13, no. 6 (2023):178,
https://doi.org/10.3390/geosciences13060178 . .

TY  - CONF
AU  - Kimura, Ichiro
AU  - Bousmar, Didier
AU  - Archambeau, Pierre
AU  - Dewals, Benjamin
AU  - Erpicum, Sebastien
AU  - Pirotton, Michel
AU  - Li, X.
AU  - Đorđević, Dejana
AU  - Rosić, Nikola
AU  - Zindović, Budo
AU  - Echeverribar, Isabel
AU  - Navas-Montilla, Adrian
AU  - Brufau, P.
AU  - Garcia-Navarro, Pilar
AU  - Gonzales de Linares, Matthieu
AU  - Paquier, Andre
AU  - Kopmann, Rebekka
PY  - 2022
UR  - https://queensuca-my.sharepoint.com/:b:/r/personal/amsilva_queensu_ca/Documents/River%20Flow%202022_Papers1/Day%201_AM%20(Morning)/Session_A1/Kimura_A009.pdf?csf=1&web=1&e=5j9MEx
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2942
AB  - The benchmarking test of 2D and 3D numerical models on a compound channel flow with a rectangular-shaped main channel and a rectangular-shaped floodplain was carried out by the IAHR Working Group on Compound Channels. The selected test case is the flume experiment by Nezu and Tominaga (1991). Nine depth-averaged 2D models and four 3D models participated in the benchmark. In the 2D models, the depth-averaged streamwise velocity profiles in the lateral direction were compared. In the 3D models, velocity components in three directions as well as the distribution of the turbulence kinetic energy in a cross-section were compared. Through the comparison, the applicability and limitations of each model are highlighted and discussed with regard to the model characteristics.
PB  - Queen’s University, Canada
C3  - Proceedings of 11th International Conference on Fluvial Hydraulics - River Flow 2022 (on-line)
T1  - Flow structure in a compound channel: benchmarking 2D and 3D numerical models
SP  - A009
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2942
ER  - 

@conference{
author = "Kimura, Ichiro and Bousmar, Didier and Archambeau, Pierre and Dewals, Benjamin and Erpicum, Sebastien and Pirotton, Michel and Li, X. and Đorđević, Dejana and Rosić, Nikola and Zindović, Budo and Echeverribar, Isabel and Navas-Montilla, Adrian and Brufau, P. and Garcia-Navarro, Pilar and Gonzales de Linares, Matthieu and Paquier, Andre and Kopmann, Rebekka",
year = "2022",
abstract = "The benchmarking test of 2D and 3D numerical models on a compound channel flow with a rectangular-shaped main channel and a rectangular-shaped floodplain was carried out by the IAHR Working Group on Compound Channels. The selected test case is the flume experiment by Nezu and Tominaga (1991). Nine depth-averaged 2D models and four 3D models participated in the benchmark. In the 2D models, the depth-averaged streamwise velocity profiles in the lateral direction were compared. In the 3D models, velocity components in three directions as well as the distribution of the turbulence kinetic energy in a cross-section were compared. Through the comparison, the applicability and limitations of each model are highlighted and discussed with regard to the model characteristics.",
publisher = "Queen’s University, Canada",
journal = "Proceedings of 11th International Conference on Fluvial Hydraulics - River Flow 2022 (on-line)",
title = "Flow structure in a compound channel: benchmarking 2D and 3D numerical models",
pages = "A009",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2942"
}

Kimura, I., Bousmar, D., Archambeau, P., Dewals, B., Erpicum, S., Pirotton, M., Li, X., Đorđević, D., Rosić, N., Zindović, B., Echeverribar, I., Navas-Montilla, A., Brufau, P., Garcia-Navarro, P., Gonzales de Linares, M., Paquier, A.,& Kopmann, R.. (2022). Flow structure in a compound channel: benchmarking 2D and 3D numerical models. in Proceedings of 11th International Conference on Fluvial Hydraulics - River Flow 2022 (on-line)
Queen’s University, Canada., A009.
https://hdl.handle.net/21.15107/rcub_grafar_2942

Kimura I, Bousmar D, Archambeau P, Dewals B, Erpicum S, Pirotton M, Li X, Đorđević D, Rosić N, Zindović B, Echeverribar I, Navas-Montilla A, Brufau P, Garcia-Navarro P, Gonzales de Linares M, Paquier A, Kopmann R. Flow structure in a compound channel: benchmarking 2D and 3D numerical models. in Proceedings of 11th International Conference on Fluvial Hydraulics - River Flow 2022 (on-line). 2022;:A009.
https://hdl.handle.net/21.15107/rcub_grafar_2942 .

Kimura, Ichiro, Bousmar, Didier, Archambeau, Pierre, Dewals, Benjamin, Erpicum, Sebastien, Pirotton, Michel, Li, X., Đorđević, Dejana, Rosić, Nikola, Zindović, Budo, Echeverribar, Isabel, Navas-Montilla, Adrian, Brufau, P., Garcia-Navarro, Pilar, Gonzales de Linares, Matthieu, Paquier, Andre, Kopmann, Rebekka, "Flow structure in a compound channel: benchmarking 2D and 3D numerical models" in Proceedings of 11th International Conference on Fluvial Hydraulics - River Flow 2022 (on-line) (2022):A009,
https://hdl.handle.net/21.15107/rcub_grafar_2942 .

TY  - JOUR
AU  - Praštalo, Petar
AU  - Zindović, Budo
AU  - Savić, Ljubodrag
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2902
AB  - Ski odskok je “standardno rješenje“, kada je u pitanju evakuacija velikih voda kod visokih brana. Pomoću ski odskoka omogućeno je da se gubi određeni dio energije, prije nego mlaz udari u donju vodu. Da bi se omogućila veća aeracija mlaza i efikasnije rasipanje energije, kao rješenje se preporučuje ski odskok sa horizontalnim skretanjem mlaza. Pored povoljnih geoloških prilika neophodnih za primjenu ovog rješenja za preporuku je svakako provjera rasporeda dinamičkih pritisaka duž kašike kao i dometa mlaza ski odskoka. Sve ove karakteristike neophodno je provjeriti na hidrauličkom modelu. U ovom radu se daje prikaz primjene ski odskoka sa horizontalnim skretanjem mlaza na brani HE Zavoj kod Pirota, za koja su sprovedena hidraulička modelska ispitivanja.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Ski odskok sa horizontalnim skretanjem mlaza
EP  - 148
IS  - 317-318
SP  - 141
VL  - 54
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2902
ER  - 

@article{
author = "Praštalo, Petar and Zindović, Budo and Savić, Ljubodrag",
year = "2022",
abstract = "Ski odskok je “standardno rješenje“, kada je u pitanju evakuacija velikih voda kod visokih brana. Pomoću ski odskoka omogućeno je da se gubi određeni dio energije, prije nego mlaz udari u donju vodu. Da bi se omogućila veća aeracija mlaza i efikasnije rasipanje energije, kao rješenje se preporučuje ski odskok sa horizontalnim skretanjem mlaza. Pored povoljnih geoloških prilika neophodnih za primjenu ovog rješenja za preporuku je svakako provjera rasporeda dinamičkih pritisaka duž kašike kao i dometa mlaza ski odskoka. Sve ove karakteristike neophodno je provjeriti na hidrauličkom modelu. U ovom radu se daje prikaz primjene ski odskoka sa horizontalnim skretanjem mlaza na brani HE Zavoj kod Pirota, za koja su sprovedena hidraulička modelska ispitivanja.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Ski odskok sa horizontalnim skretanjem mlaza",
pages = "148-141",
number = "317-318",
volume = "54",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2902"
}

Praštalo, P., Zindović, B.,& Savić, L.. (2022). Ski odskok sa horizontalnim skretanjem mlaza. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 54(317-318), 141-148.
https://hdl.handle.net/21.15107/rcub_grafar_2902

Praštalo P, Zindović B, Savić L. Ski odskok sa horizontalnim skretanjem mlaza. in Vodoprivreda. 2022;54(317-318):141-148.
https://hdl.handle.net/21.15107/rcub_grafar_2902 .

Praštalo, Petar, Zindović, Budo, Savić, Ljubodrag, "Ski odskok sa horizontalnim skretanjem mlaza" in Vodoprivreda, 54, no. 317-318 (2022):141-148,
https://hdl.handle.net/21.15107/rcub_grafar_2902 .

TY  - GEN
AU  - Milašinović, Miloš
AU  - Prodanović, Dušan
AU  - Zindović, Budo
AU  - Stojanović, Boban
AU  - Milivojević, Nikola
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2831
PB  - Univerzitet u Beogradu
T1  - CTDA: Control Theory based Data Assimilation – metoda za brzu asimilaciju podataka u modelima otvorenih tokova
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2831
ER  - 

@misc{
author = "Milašinović, Miloš and Prodanović, Dušan and Zindović, Budo and Stojanović, Boban and Milivojević, Nikola",
year = "2022",
publisher = "Univerzitet u Beogradu",
title = "CTDA: Control Theory based Data Assimilation – metoda za brzu asimilaciju podataka u modelima otvorenih tokova",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2831"
}

Milašinović, M., Prodanović, D., Zindović, B., Stojanović, B.,& Milivojević, N.. (2022). CTDA: Control Theory based Data Assimilation – metoda za brzu asimilaciju podataka u modelima otvorenih tokova. 
Univerzitet u Beogradu..
https://hdl.handle.net/21.15107/rcub_grafar_2831

Milašinović M, Prodanović D, Zindović B, Stojanović B, Milivojević N. CTDA: Control Theory based Data Assimilation – metoda za brzu asimilaciju podataka u modelima otvorenih tokova. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2831 .

Milašinović, Miloš, Prodanović, Dušan, Zindović, Budo, Stojanović, Boban, Milivojević, Nikola, "CTDA: Control Theory based Data Assimilation – metoda za brzu asimilaciju podataka u modelima otvorenih tokova" (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2831 .

TY  - JOUR
AU  - Milašinović, Miloš
AU  - Prodanović, Dušan
AU  - Stanić, Miloš
AU  - Zindović, Budo
AU  - Stojanović, Boban
AU  - Milivojević, Nikola
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2693
AB  - Reliable water resources management requires decision support tools to successfully forecast hydraulic data (stage and flow hydrographs). Even though data-driven methods are nowadays trendy to apply, they still fail to provide reliable forecasts during extreme periods due to a lack of training data. Therefore, model-driven forecasting is still needed. However, the model-driven forecasting approach is affected by numerous uncertainties in initial and boundary conditions. To improve the real-time model's operation, it can be regularly updated using measured data in the data assimilation (DA) procedure. Widely used DA techniques are computationally expensive, which reduce their real-time applications. Previous research shows that tailor-made, time-efficient DA methods based on the control theory could be used instead. This paper presents further insights into the control theory-based DA for 1D hydraulic models. This method uses Proportional–Integrative–Derivative (PID) controllers to assimilate computed water levels and observed data. This paper describes the two-stage PID controllers’ tuning procedure. Multi-objective optimization by Nondominated Sorting Genetic Algorithm II (NSGA-II) was used to determine optimal parameters for PID controllers. The proposed tuning procedure is tested on a hydraulic model used as a decision support tool for the transboundary Iron Gate 1 hydropower system on the Danube River, showing that the average discrepancy between modeled and observed water levels can be less than 0.05 m for more than 97% of assimilation window.
PB  - IWA Publishing
T2  - Journal of Hydroinformatics
T1  - Control theory-based data assimilation for open channel hydraulic models: tuning PID controllers using multi-objective optimization
IS  - 4
VL  - 24
DO  - 10.2166/hydro.2022.034
ER  - 

@article{
author = "Milašinović, Miloš and Prodanović, Dušan and Stanić, Miloš and Zindović, Budo and Stojanović, Boban and Milivojević, Nikola",
year = "2022",
abstract = "Reliable water resources management requires decision support tools to successfully forecast hydraulic data (stage and flow hydrographs). Even though data-driven methods are nowadays trendy to apply, they still fail to provide reliable forecasts during extreme periods due to a lack of training data. Therefore, model-driven forecasting is still needed. However, the model-driven forecasting approach is affected by numerous uncertainties in initial and boundary conditions. To improve the real-time model's operation, it can be regularly updated using measured data in the data assimilation (DA) procedure. Widely used DA techniques are computationally expensive, which reduce their real-time applications. Previous research shows that tailor-made, time-efficient DA methods based on the control theory could be used instead. This paper presents further insights into the control theory-based DA for 1D hydraulic models. This method uses Proportional–Integrative–Derivative (PID) controllers to assimilate computed water levels and observed data. This paper describes the two-stage PID controllers’ tuning procedure. Multi-objective optimization by Nondominated Sorting Genetic Algorithm II (NSGA-II) was used to determine optimal parameters for PID controllers. The proposed tuning procedure is tested on a hydraulic model used as a decision support tool for the transboundary Iron Gate 1 hydropower system on the Danube River, showing that the average discrepancy between modeled and observed water levels can be less than 0.05 m for more than 97% of assimilation window.",
publisher = "IWA Publishing",
journal = "Journal of Hydroinformatics",
title = "Control theory-based data assimilation for open channel hydraulic models: tuning PID controllers using multi-objective optimization",
number = "4",
volume = "24",
doi = "10.2166/hydro.2022.034"
}

Milašinović, M., Prodanović, D., Stanić, M., Zindović, B., Stojanović, B.,& Milivojević, N.. (2022). Control theory-based data assimilation for open channel hydraulic models: tuning PID controllers using multi-objective optimization. in Journal of Hydroinformatics
IWA Publishing., 24(4).
https://doi.org/10.2166/hydro.2022.034

Milašinović M, Prodanović D, Stanić M, Zindović B, Stojanović B, Milivojević N. Control theory-based data assimilation for open channel hydraulic models: tuning PID controllers using multi-objective optimization. in Journal of Hydroinformatics. 2022;24(4).
doi:10.2166/hydro.2022.034 .

Milašinović, Miloš, Prodanović, Dušan, Stanić, Miloš, Zindović, Budo, Stojanović, Boban, Milivojević, Nikola, "Control theory-based data assimilation for open channel hydraulic models: tuning PID controllers using multi-objective optimization" in Journal of Hydroinformatics, 24, no. 4 (2022),
https://doi.org/10.2166/hydro.2022.034 . .

TY  - JOUR
AU  - Ljubičić, Robert
AU  - Zindović, Budo
AU  - Rosić, Nikola
AU  - Pavlović, Dragutin
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2818
AB  - Merenje protoka u otvorenim kanalima često je dugotrajan, invazivan, složen i skup poduhvat, koji neretko uključuje veći broj naročito obučenih rukovaoca opremom, i različite naknadne obrade podataka sa terena. Razvoj tehnologije lakih bespilotnih letelica opremljenih kamerama omogućio je alternativan pristup posrednog merenja protoka putem analize polja površinskih brzina u otvorenom toku. Iako merenja ovom metodom pružaju podatke više merne neizvesnosti od konvencionalnih mernih metoda, opisana procedura beskontaktnog merenja protoka je (1) vremenski efikasnija, (2) zahteva manji broj rukovaoca opremom, (3) primenjiva čak i u određenim uslovima u kojima konvencionalne metode nisu i (4) otvara mogućnost automatizovanog i autonomnog monitoringa vodotoka. Procedura hidrometrijske analize video zapisa još uvek nije standardizovana, i na tržištu se teško pronalazi alat koji uspešno obavlja sve korake neophodne za dobijanje podataka o brzinama i protoku. Alat SSIMS-Flow razvijen je sa ciljem da omogući lak pristup različitim koracima pripreme i procesiranja podataka iz video zapisa u sveobuhvatnom procesu – od pripreme „sirovog“ video zapisa do procene vrednosti protoka – čime se drastično pojednostavljuje primena opisane metoda merenja.
AB  - Open-channel flow rate measurement is often a time consuming, invasive, complex, and expensive procedure, which frequently requires involvement of multiple equipment operators and various postprocessing techniques. The development of camera-equipped lightweight unmanned aerial vehicles has enabled an alternative approach of indirect flow rate measurement by analyzing the surface flow velocities. Although the data acquired by this approach experiences somewhat higher measurement uncertainty than that of conventional measurement techniques, such non-contact measurement method is (1) more time efficient, (2) requires fewer operators, (3) can be applied in certain conditions when conventional methods are unfeasible, and (4) allows for automated and autonomous flow monitoring. Hydrometric analyses of video footage are still unstandardized, and finding a suitable tool which successfully deals with all the necessary actions for velocity and flow estimation has proven to be difficult. SSIMS-Flow tool is developed with the aim of providing easy access to different actions of video footage data preparation and processing to enable a holistic process – from preparing a “raw” video footage to the estimation of flow rate – which drastically simplifies the described approach.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - SSIMS-FLOW: Alat za procenu protoka u otvorenim tokovima na osnovu polja površinskih brzina iz video zapisa sa lakih bespilotnih letilica
T1  - SSIMS-FLOW: Flow Rate Estimation Tool Using Surface Velocity Imagery From Unmanned Aerial Vehicles
EP  - 139
IS  - 317-318
SP  - 123
VL  - 54
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2818
ER  - 

@article{
author = "Ljubičić, Robert and Zindović, Budo and Rosić, Nikola and Pavlović, Dragutin",
year = "2022",
abstract = "Merenje protoka u otvorenim kanalima često je dugotrajan, invazivan, složen i skup poduhvat, koji neretko uključuje veći broj naročito obučenih rukovaoca opremom, i različite naknadne obrade podataka sa terena. Razvoj tehnologije lakih bespilotnih letelica opremljenih kamerama omogućio je alternativan pristup posrednog merenja protoka putem analize polja površinskih brzina u otvorenom toku. Iako merenja ovom metodom pružaju podatke više merne neizvesnosti od konvencionalnih mernih metoda, opisana procedura beskontaktnog merenja protoka je (1) vremenski efikasnija, (2) zahteva manji broj rukovaoca opremom, (3) primenjiva čak i u određenim uslovima u kojima konvencionalne metode nisu i (4) otvara mogućnost automatizovanog i autonomnog monitoringa vodotoka. Procedura hidrometrijske analize video zapisa još uvek nije standardizovana, i na tržištu se teško pronalazi alat koji uspešno obavlja sve korake neophodne za dobijanje podataka o brzinama i protoku. Alat SSIMS-Flow razvijen je sa ciljem da omogući lak pristup različitim koracima pripreme i procesiranja podataka iz video zapisa u sveobuhvatnom procesu – od pripreme „sirovog“ video zapisa do procene vrednosti protoka – čime se drastično pojednostavljuje primena opisane metoda merenja., Open-channel flow rate measurement is often a time consuming, invasive, complex, and expensive procedure, which frequently requires involvement of multiple equipment operators and various postprocessing techniques. The development of camera-equipped lightweight unmanned aerial vehicles has enabled an alternative approach of indirect flow rate measurement by analyzing the surface flow velocities. Although the data acquired by this approach experiences somewhat higher measurement uncertainty than that of conventional measurement techniques, such non-contact measurement method is (1) more time efficient, (2) requires fewer operators, (3) can be applied in certain conditions when conventional methods are unfeasible, and (4) allows for automated and autonomous flow monitoring. Hydrometric analyses of video footage are still unstandardized, and finding a suitable tool which successfully deals with all the necessary actions for velocity and flow estimation has proven to be difficult. SSIMS-Flow tool is developed with the aim of providing easy access to different actions of video footage data preparation and processing to enable a holistic process – from preparing a “raw” video footage to the estimation of flow rate – which drastically simplifies the described approach.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "SSIMS-FLOW: Alat za procenu protoka u otvorenim tokovima na osnovu polja površinskih brzina iz video zapisa sa lakih bespilotnih letilica, SSIMS-FLOW: Flow Rate Estimation Tool Using Surface Velocity Imagery From Unmanned Aerial Vehicles",
pages = "139-123",
number = "317-318",
volume = "54",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2818"
}

Ljubičić, R., Zindović, B., Rosić, N.,& Pavlović, D.. (2022). SSIMS-FLOW: Alat za procenu protoka u otvorenim tokovima na osnovu polja površinskih brzina iz video zapisa sa lakih bespilotnih letilica. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 54(317-318), 123-139.
https://hdl.handle.net/21.15107/rcub_grafar_2818

Ljubičić R, Zindović B, Rosić N, Pavlović D. SSIMS-FLOW: Alat za procenu protoka u otvorenim tokovima na osnovu polja površinskih brzina iz video zapisa sa lakih bespilotnih letilica. in Vodoprivreda. 2022;54(317-318):123-139.
https://hdl.handle.net/21.15107/rcub_grafar_2818 .

Ljubičić, Robert, Zindović, Budo, Rosić, Nikola, Pavlović, Dragutin, "SSIMS-FLOW: Alat za procenu protoka u otvorenim tokovima na osnovu polja površinskih brzina iz video zapisa sa lakih bespilotnih letilica" in Vodoprivreda, 54, no. 317-318 (2022):123-139,
https://hdl.handle.net/21.15107/rcub_grafar_2818 .

TY  - GEN
AU  - Ljubičić, Robert
AU  - Vićanović, Ivana
AU  - Zindović, Budo
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3035
T1  - Hydraulic jump free-surface detection using image processing - детекција слободне површине хидрауличког скока путем метода обраде слика [техничко решење]
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3035
ER  - 

@misc{
author = "Ljubičić, Robert and Vićanović, Ivana and Zindović, Budo and Kapor, Radomir and Savić, Ljubodrag",
year = "2022",
title = "Hydraulic jump free-surface detection using image processing - детекција слободне површине хидрауличког скока путем метода обраде слика [техничко решење]",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3035"
}

Ljubičić, R., Vićanović, I., Zindović, B., Kapor, R.,& Savić, L.. (2022). Hydraulic jump free-surface detection using image processing - детекција слободне површине хидрауличког скока путем метода обраде слика [техничко решење]. .
https://hdl.handle.net/21.15107/rcub_grafar_3035

Ljubičić R, Vićanović I, Zindović B, Kapor R, Savić L. Hydraulic jump free-surface detection using image processing - детекција слободне површине хидрауличког скока путем метода обраде слика [техничко решење]. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_3035 .

Ljubičić, Robert, Vićanović, Ivana, Zindović, Budo, Kapor, Radomir, Savić, Ljubodrag, "Hydraulic jump free-surface detection using image processing - детекција слободне површине хидрауличког скока путем метода обраде слика [техничко решење]" (2022),
https://hdl.handle.net/21.15107/rcub_grafar_3035 .

TY  - CONF
AU  - Ljubičić, Robert
AU  - Đorđević, Filip
AU  - Zindović, Budo
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
AU  - Glišić, Radmilo
AU  - Dmitrović, Ivana
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2613
AB  - U radu se prikazuju rezultati hidrauličkih modelskih ispitivanja glavnog evakuatora brane Sidi Naser. Na parcijalnom modelu proveren je kapacitet preliva za računski protok od 3708 m3/s. Na modelu je proverena efikasnost disipacije stepenastog brzotoka i visina razdelnih zidova. Takođe, ispitana je i efikasnost rada slapišta pri računskom protoku i osetljivost njegovog rada na promenu nivoa donje vode. Merenjm brzine strujanja niizvodno od slapišta pokazano je da regulisano korito nije ugroženo. Fizičkim modelom je potvrđeno da se projektovano rešenje dobro ponaša za opseg ispitanih protok
PB  - Srpsko društvo za hidraulička istraživanja i Srpsko društvo za hidrologiju
C3  - Zbornik radova 19. savetovanja SDHI/SDH
T1  - Hidrauličko modeliranje brane sa stepenastim brzotokom - primer brane Sidi Naceur
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2613
ER  - 

@conference{
author = "Ljubičić, Robert and Đorđević, Filip and Zindović, Budo and Kapor, Radomir and Savić, Ljubodrag and Glišić, Radmilo and Dmitrović, Ivana",
year = "2021",
abstract = "U radu se prikazuju rezultati hidrauličkih modelskih ispitivanja glavnog evakuatora brane Sidi Naser. Na parcijalnom modelu proveren je kapacitet preliva za računski protok od 3708 m3/s. Na modelu je proverena efikasnost disipacije stepenastog brzotoka i visina razdelnih zidova. Takođe, ispitana je i efikasnost rada slapišta pri računskom protoku i osetljivost njegovog rada na promenu nivoa donje vode. Merenjm brzine strujanja niizvodno od slapišta pokazano je da regulisano korito nije ugroženo. Fizičkim modelom je potvrđeno da se projektovano rešenje dobro ponaša za opseg ispitanih protok",
publisher = "Srpsko društvo za hidraulička istraživanja i Srpsko društvo za hidrologiju",
journal = "Zbornik radova 19. savetovanja SDHI/SDH",
title = "Hidrauličko modeliranje brane sa stepenastim brzotokom - primer brane Sidi Naceur",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2613"
}

Ljubičić, R., Đorđević, F., Zindović, B., Kapor, R., Savić, L., Glišić, R.,& Dmitrović, I.. (2021). Hidrauličko modeliranje brane sa stepenastim brzotokom - primer brane Sidi Naceur. in Zbornik radova 19. savetovanja SDHI/SDH
Srpsko društvo za hidraulička istraživanja i Srpsko društvo za hidrologiju..
https://hdl.handle.net/21.15107/rcub_grafar_2613

Ljubičić R, Đorđević F, Zindović B, Kapor R, Savić L, Glišić R, Dmitrović I. Hidrauličko modeliranje brane sa stepenastim brzotokom - primer brane Sidi Naceur. in Zbornik radova 19. savetovanja SDHI/SDH. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2613 .

Ljubičić, Robert, Đorđević, Filip, Zindović, Budo, Kapor, Radomir, Savić, Ljubodrag, Glišić, Radmilo, Dmitrović, Ivana, "Hidrauličko modeliranje brane sa stepenastim brzotokom - primer brane Sidi Naceur" in Zbornik radova 19. savetovanja SDHI/SDH (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2613 .

TY  - CONF
AU  - Đorđević, Filip
AU  - Ljubičić, Robert
AU  - Zindović, Budo
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2614
AB  - Stepenasti brzotoci su dobri disipatori energije, posebno pri nižim vrednostima jediničnog protoka. Sa povećanjem jediničnog protoka, efikasnost disipacije se smanjuje što rezultuje većom preostalom energijom na ulazu u umirujući bazen. Da bi se smanjile dimenzije bazena a povećala pouzdanost i efikasnost njihovog rada, često se projektuju sa blokovima. Uticaj dimenzija, rasporeda i položaja blokova za umirenje za potrebe ovog rada, ispitan je na fizičkom modelu. Rezultati su pokazali da se efikasnost disipacije može poboljšati povećanjem broja blokova (npr. dva reda umesto jednog) i da je povoljnije ukoliko su najuzvodniji blokovi manji. Rezultati ukazuju i da veći broj zuba može značajno da poboljša i stabilnost toka nizvodno od hidrauličkog skoka i smanjiti prskanje. U narednim fazama, ispitivanja obuhvatili bi se i umirujući bazeni sa nagnutim dnom.
PB  - Srpsko društvo za hidraulička istraživanja i Srpsko društvo za hidrologiju
C3  - Zbornik radova 19. savetovanja SDHI/SDH
T1  - Uticaj veličine, rasporeda i položaja blokova umirujućeg bazena stepenastog brzotoka na preostalu energiju
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2614
ER  - 

@conference{
author = "Đorđević, Filip and Ljubičić, Robert and Zindović, Budo and Kapor, Radomir and Savić, Ljubodrag",
year = "2021",
abstract = "Stepenasti brzotoci su dobri disipatori energije, posebno pri nižim vrednostima jediničnog protoka. Sa povećanjem jediničnog protoka, efikasnost disipacije se smanjuje što rezultuje većom preostalom energijom na ulazu u umirujući bazen. Da bi se smanjile dimenzije bazena a povećala pouzdanost i efikasnost njihovog rada, često se projektuju sa blokovima. Uticaj dimenzija, rasporeda i položaja blokova za umirenje za potrebe ovog rada, ispitan je na fizičkom modelu. Rezultati su pokazali da se efikasnost disipacije može poboljšati povećanjem broja blokova (npr. dva reda umesto jednog) i da je povoljnije ukoliko su najuzvodniji blokovi manji. Rezultati ukazuju i da veći broj zuba može značajno da poboljša i stabilnost toka nizvodno od hidrauličkog skoka i smanjiti prskanje. U narednim fazama, ispitivanja obuhvatili bi se i umirujući bazeni sa nagnutim dnom.",
publisher = "Srpsko društvo za hidraulička istraživanja i Srpsko društvo za hidrologiju",
journal = "Zbornik radova 19. savetovanja SDHI/SDH",
title = "Uticaj veličine, rasporeda i položaja blokova umirujućeg bazena stepenastog brzotoka na preostalu energiju",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2614"
}

Đorđević, F., Ljubičić, R., Zindović, B., Kapor, R.,& Savić, L.. (2021). Uticaj veličine, rasporeda i položaja blokova umirujućeg bazena stepenastog brzotoka na preostalu energiju. in Zbornik radova 19. savetovanja SDHI/SDH
Srpsko društvo za hidraulička istraživanja i Srpsko društvo za hidrologiju..
https://hdl.handle.net/21.15107/rcub_grafar_2614

Đorđević F, Ljubičić R, Zindović B, Kapor R, Savić L. Uticaj veličine, rasporeda i položaja blokova umirujućeg bazena stepenastog brzotoka na preostalu energiju. in Zbornik radova 19. savetovanja SDHI/SDH. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2614 .

Đorđević, Filip, Ljubičić, Robert, Zindović, Budo, Kapor, Radomir, Savić, Ljubodrag, "Uticaj veličine, rasporeda i položaja blokova umirujućeg bazena stepenastog brzotoka na preostalu energiju" in Zbornik radova 19. savetovanja SDHI/SDH (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2614 .

TY  - CONF
AU  - Milašinović, Miloš
AU  - Prodanović, Dušan
AU  - Zindović, Budo
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2457
AB  - Održivo upravljanje vodnim resursima zahteva prognoze dostupne količine vode kao pomoć u donošenju upravljačkih odluka. Međutim, te prognoze su često nepouzdane zbog prisustva različitih tipova neodređenosti. Kod primene linijskih (1D) modela tečenja u otvorenim tokovima neki od dominantnijh izvora neodređenosti su nedovoljno dobro poznavanje graničnih uslova (hidrogrami dotoka, krive protoka) i nepouzdani početni uslovi koji su osnova od koje se započinje prognoza. Kontinulana merenja na sistemu (npr. merenja nivoa na reci) predstavljaju relativno pouzdan reprezent njegovog stanja ali pokrivaju samo jedan mali deo domena koji se razmatra. Zbog toga se pribegava postupku asimilacije podataka kojom se usaglašavaju rezultati 1D modela tečenja u reci i merenja nivoa. Ova usaglašavanja se sprovode za već prikupljene podatke, u vremenskom periodu neposredno pre trenutka od koga se želi izvršiti prognoza. Na kraju asimilacionog perioda model bolje oslikava trenutno stanje na celom domenu i može se iskoristiti za prognozu. Međutim, ako se radi kontinualna asimilacija modela, promene u stanju tokom asimilacije ukazuju na stepen greške u ulaznim hidrogramima. Ovo istraživanje prikazuje potencijal nove metode za asimilaciju podataka za rekonstrukciju stvarnih hidrograma na vodomernim stanicama na osnovu zabeleženih nivoa. Ovaj postupak se može koristiti kao alat za rekonstrukciju poplavnih talasa i za procenu krivih protoka na pojedinim lokacijama.
PB  - Univerzitet u Beogradu – Građevinski fakultet, Beograd
C3  - Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
T1  - Rekonstrukcija hidrograma na vodomernim stanicama primenom rezultata asimilacije preliminarni rezultati
EP  - 265
SP  - 255
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2457
ER  - 

@conference{
author = "Milašinović, Miloš and Prodanović, Dušan and Zindović, Budo",
year = "2021",
abstract = "Održivo upravljanje vodnim resursima zahteva prognoze dostupne količine vode kao pomoć u donošenju upravljačkih odluka. Međutim, te prognoze su često nepouzdane zbog prisustva različitih tipova neodređenosti. Kod primene linijskih (1D) modela tečenja u otvorenim tokovima neki od dominantnijh izvora neodređenosti su nedovoljno dobro poznavanje graničnih uslova (hidrogrami dotoka, krive protoka) i nepouzdani početni uslovi koji su osnova od koje se započinje prognoza. Kontinulana merenja na sistemu (npr. merenja nivoa na reci) predstavljaju relativno pouzdan reprezent njegovog stanja ali pokrivaju samo jedan mali deo domena koji se razmatra. Zbog toga se pribegava postupku asimilacije podataka kojom se usaglašavaju rezultati 1D modela tečenja u reci i merenja nivoa. Ova usaglašavanja se sprovode za već prikupljene podatke, u vremenskom periodu neposredno pre trenutka od koga se želi izvršiti prognoza. Na kraju asimilacionog perioda model bolje oslikava trenutno stanje na celom domenu i može se iskoristiti za prognozu. Međutim, ako se radi kontinualna asimilacija modela, promene u stanju tokom asimilacije ukazuju na stepen greške u ulaznim hidrogramima. Ovo istraživanje prikazuje potencijal nove metode za asimilaciju podataka za rekonstrukciju stvarnih hidrograma na vodomernim stanicama na osnovu zabeleženih nivoa. Ovaj postupak se može koristiti kao alat za rekonstrukciju poplavnih talasa i za procenu krivih protoka na pojedinim lokacijama.",
publisher = "Univerzitet u Beogradu – Građevinski fakultet, Beograd",
journal = "Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju",
title = "Rekonstrukcija hidrograma na vodomernim stanicama primenom rezultata asimilacije preliminarni rezultati",
pages = "265-255",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2457"
}

Milašinović, M., Prodanović, D.,& Zindović, B.. (2021). Rekonstrukcija hidrograma na vodomernim stanicama primenom rezultata asimilacije preliminarni rezultati. in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
Univerzitet u Beogradu – Građevinski fakultet, Beograd., 255-265.
https://hdl.handle.net/21.15107/rcub_grafar_2457

Milašinović M, Prodanović D, Zindović B. Rekonstrukcija hidrograma na vodomernim stanicama primenom rezultata asimilacije preliminarni rezultati. in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju. 2021;:255-265.
https://hdl.handle.net/21.15107/rcub_grafar_2457 .

Milašinović, Miloš, Prodanović, Dušan, Zindović, Budo, "Rekonstrukcija hidrograma na vodomernim stanicama primenom rezultata asimilacije preliminarni rezultati" in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju (2021):255-265,
https://hdl.handle.net/21.15107/rcub_grafar_2457 .

TY  - JOUR
AU  - Milašinović, Miloš
AU  - Prodanović, Dušan
AU  - Zindović, Budo
AU  - Stojanović, Boban
AU  - Milivojević, Nikola
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2363
AB  - Increasing renewable energy usage puts extra pressure on decision-making in river hydropower systems. Decision support tools are used for near-future forecasting of the water available. Model-driven forecasting used for river state estimation often provides bad results due to numerous uncertainties. False inflows and poor initialization are some of the uncertainty sources. To overcome this, standard data assimilation (DA) techniques (e.g., ensemble Kalman filter) are used, which are not always applicable in real systems. This paper presents further insight into the novel, tailor-made model update algorithm based on control theory. According to water-level measurements over the system, the model is controlled and continuously updated using proportional–integrative–derivative (PID) controller(s). Implementation of the PID controllers requires the controllers’ parameters estimation (tuning). This research deals with this task by presenting sequential, multi-metric procedure, applicable for controllers’ initial tuning. The proposed tuning method is tested on the Iron Gate hydropower system in Serbia, showing satisfying results.
PB  - IWA Publishing
T2  - Journal of Hydroinformatics
T1  - Control theory-based data assimilation for hydraulic models as a decision support tool for hydropower systems: sequential, multi-metric tuning of the controllers
IS  - 3
VL  - 23
DO  - 10.2166/hydro.2021.078
ER  - 

@article{
author = "Milašinović, Miloš and Prodanović, Dušan and Zindović, Budo and Stojanović, Boban and Milivojević, Nikola",
year = "2021",
abstract = "Increasing renewable energy usage puts extra pressure on decision-making in river hydropower systems. Decision support tools are used for near-future forecasting of the water available. Model-driven forecasting used for river state estimation often provides bad results due to numerous uncertainties. False inflows and poor initialization are some of the uncertainty sources. To overcome this, standard data assimilation (DA) techniques (e.g., ensemble Kalman filter) are used, which are not always applicable in real systems. This paper presents further insight into the novel, tailor-made model update algorithm based on control theory. According to water-level measurements over the system, the model is controlled and continuously updated using proportional–integrative–derivative (PID) controller(s). Implementation of the PID controllers requires the controllers’ parameters estimation (tuning). This research deals with this task by presenting sequential, multi-metric procedure, applicable for controllers’ initial tuning. The proposed tuning method is tested on the Iron Gate hydropower system in Serbia, showing satisfying results.",
publisher = "IWA Publishing",
journal = "Journal of Hydroinformatics",
title = "Control theory-based data assimilation for hydraulic models as a decision support tool for hydropower systems: sequential, multi-metric tuning of the controllers",
number = "3",
volume = "23",
doi = "10.2166/hydro.2021.078"
}

Milašinović, M., Prodanović, D., Zindović, B., Stojanović, B.,& Milivojević, N.. (2021). Control theory-based data assimilation for hydraulic models as a decision support tool for hydropower systems: sequential, multi-metric tuning of the controllers. in Journal of Hydroinformatics
IWA Publishing., 23(3).
https://doi.org/10.2166/hydro.2021.078

Milašinović M, Prodanović D, Zindović B, Stojanović B, Milivojević N. Control theory-based data assimilation for hydraulic models as a decision support tool for hydropower systems: sequential, multi-metric tuning of the controllers. in Journal of Hydroinformatics. 2021;23(3).
doi:10.2166/hydro.2021.078 .

Milašinović, Miloš, Prodanović, Dušan, Zindović, Budo, Stojanović, Boban, Milivojević, Nikola, "Control theory-based data assimilation for hydraulic models as a decision support tool for hydropower systems: sequential, multi-metric tuning of the controllers" in Journal of Hydroinformatics, 23, no. 3 (2021),
https://doi.org/10.2166/hydro.2021.078 . .

TY  - JOUR
AU  - Ljubičić, Robert
AU  - Vićanović, Ivana
AU  - Zindović, Budo
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1976
AB  - High-frequency oscillations and high surface aeration, induced by the strong turbulence, make water depth measurement for hydraulic jumps a persistently challenging task. The investigation of the hydraulic jump behaviour persists as an important research theme, especially with regards to the stilling basin design. Reliable knowledge of time-averaged and extreme values along a depth profile can help develop an adequate design of a stilling basin, improve safety and aid the understanding of the jump phenomenon. This paper presents an attempt of mitigating certain limitations of existing depth measurement methods by adopting a non-intrusive computer vision-based approach to measuring water depth profile of a hydraulic jump. The proposed method analyses video data in order to detect the boundary between the air-water mixture and the laboratory flume wall. This is achieved by coupling two computer vision methods: (1) analysis of the vertical image gradients, and (2) general-purpose edge detection using a deep neural network model. While the gradient analysis technique alone can provide adequate results, its performance can be significantly improved in combination with a neural network model which incorporates a "human-like" vision in the algorithm. The model coupling reduces the likelihood of false detections and improves the overall detection accuracy. The proposed method is tested in two experiments with different degrees of jump aeration. Results show that the coupled model can reliably and accurately capture the instantaneous depth profile along the jump, with low sensitivity to image noise and flow aeration. The coupled model presented fewer false detections than the gradient-based model, and offered consistent performance in regions of high, as well as low aeration. The proposed approach allows for automated detection of the free-surface interface and expands the potential of computer vision-based measurement methods in hydraulics.
PB  - IOP
T2  - Measurement Science and Technology
T1  - Image processing for hydraulic jump free-surface detection: coupled gradient/machine learning model
DO  - 10.1088/1361-6501/ab8b22
ER  - 

@article{
author = "Ljubičić, Robert and Vićanović, Ivana and Zindović, Budo and Kapor, Radomir and Savić, Ljubodrag",
year = "2020",
abstract = "High-frequency oscillations and high surface aeration, induced by the strong turbulence, make water depth measurement for hydraulic jumps a persistently challenging task. The investigation of the hydraulic jump behaviour persists as an important research theme, especially with regards to the stilling basin design. Reliable knowledge of time-averaged and extreme values along a depth profile can help develop an adequate design of a stilling basin, improve safety and aid the understanding of the jump phenomenon. This paper presents an attempt of mitigating certain limitations of existing depth measurement methods by adopting a non-intrusive computer vision-based approach to measuring water depth profile of a hydraulic jump. The proposed method analyses video data in order to detect the boundary between the air-water mixture and the laboratory flume wall. This is achieved by coupling two computer vision methods: (1) analysis of the vertical image gradients, and (2) general-purpose edge detection using a deep neural network model. While the gradient analysis technique alone can provide adequate results, its performance can be significantly improved in combination with a neural network model which incorporates a "human-like" vision in the algorithm. The model coupling reduces the likelihood of false detections and improves the overall detection accuracy. The proposed method is tested in two experiments with different degrees of jump aeration. Results show that the coupled model can reliably and accurately capture the instantaneous depth profile along the jump, with low sensitivity to image noise and flow aeration. The coupled model presented fewer false detections than the gradient-based model, and offered consistent performance in regions of high, as well as low aeration. The proposed approach allows for automated detection of the free-surface interface and expands the potential of computer vision-based measurement methods in hydraulics.",
publisher = "IOP",
journal = "Measurement Science and Technology",
title = "Image processing for hydraulic jump free-surface detection: coupled gradient/machine learning model",
doi = "10.1088/1361-6501/ab8b22"
}

Ljubičić, R., Vićanović, I., Zindović, B., Kapor, R.,& Savić, L.. (2020). Image processing for hydraulic jump free-surface detection: coupled gradient/machine learning model. in Measurement Science and Technology
IOP..
https://doi.org/10.1088/1361-6501/ab8b22

Ljubičić R, Vićanović I, Zindović B, Kapor R, Savić L. Image processing for hydraulic jump free-surface detection: coupled gradient/machine learning model. in Measurement Science and Technology. 2020;.
doi:10.1088/1361-6501/ab8b22 .

Ljubičić, Robert, Vićanović, Ivana, Zindović, Budo, Kapor, Radomir, Savić, Ljubodrag, "Image processing for hydraulic jump free-surface detection: coupled gradient/machine learning model" in Measurement Science and Technology (2020),
https://doi.org/10.1088/1361-6501/ab8b22 . .

TY  - CONF
AU  - Milašinović, Miloš
AU  - Prodanović, Dušan
AU  - Zindović, Budo
AU  - Rosić, Nikola
AU  - Milivojević, Nikola
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2092
AB  - Model-driven forecasting used for flood risk assessment or river hydropower
systems management, can produce bad results due to many model uncertainties. False inflow
and lateral inflow data and/or poor estimation of initial conditions are some of the uncertainty
sources. To improve model-driven forecasting, data assimilation methods are used for updating
model (e.g., water levels) according to measurements. Widespread data assimilation
methods (EnKF, Particle Filter) often increase computational time, which creates difficulties
in everyday application of these methods in hydraulic modelling. This paper presents novel
approach based on indirect model update adding correction flows at observation locations.
This novel, tailor-made, assimilation approach uses proportional-integrative-derivative controller’s
theory as algorithm for correction flow calculation. Using indirect approach for
model update has justification in models where multiple inflows, including lateral inflows, are
bad estimated or even neglected. This novel approach is tested on 170km long section of
Danube model in Serbia, showing good performance.
PB  - CRC Press/Balkema
C3  - River Flow 2020
T1  - Control theory-based update of water levels in 1D hydrodynamic models
DO  - 10.1201/b22619
ER  - 

@conference{
author = "Milašinović, Miloš and Prodanović, Dušan and Zindović, Budo and Rosić, Nikola and Milivojević, Nikola",
year = "2020",
abstract = "Model-driven forecasting used for flood risk assessment or river hydropower
systems management, can produce bad results due to many model uncertainties. False inflow
and lateral inflow data and/or poor estimation of initial conditions are some of the uncertainty
sources. To improve model-driven forecasting, data assimilation methods are used for updating
model (e.g., water levels) according to measurements. Widespread data assimilation
methods (EnKF, Particle Filter) often increase computational time, which creates difficulties
in everyday application of these methods in hydraulic modelling. This paper presents novel
approach based on indirect model update adding correction flows at observation locations.
This novel, tailor-made, assimilation approach uses proportional-integrative-derivative controller’s
theory as algorithm for correction flow calculation. Using indirect approach for
model update has justification in models where multiple inflows, including lateral inflows, are
bad estimated or even neglected. This novel approach is tested on 170km long section of
Danube model in Serbia, showing good performance.",
publisher = "CRC Press/Balkema",
journal = "River Flow 2020",
title = "Control theory-based update of water levels in 1D hydrodynamic models",
doi = "10.1201/b22619"
}

Milašinović, M., Prodanović, D., Zindović, B., Rosić, N.,& Milivojević, N.. (2020). Control theory-based update of water levels in 1D hydrodynamic models. in River Flow 2020
CRC Press/Balkema..
https://doi.org/10.1201/b22619

Milašinović M, Prodanović D, Zindović B, Rosić N, Milivojević N. Control theory-based update of water levels in 1D hydrodynamic models. in River Flow 2020. 2020;.
doi:10.1201/b22619 .

Milašinović, Miloš, Prodanović, Dušan, Zindović, Budo, Rosić, Nikola, Milivojević, Nikola, "Control theory-based update of water levels in 1D hydrodynamic models" in River Flow 2020 (2020),
https://doi.org/10.1201/b22619 . .

TY  - JOUR
AU  - Marjanović, Dušan
AU  - Vićanović, Ivana
AU  - Ljubičić, Robert
AU  - Zindović, Budo
AU  - Savić, Ljubodrag
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1867
AB  - Određivanje i praćenje promena nivoa vode u laboratorijskim uslovima primenom tradicionalnih mernih metoda opterećeno je raznim nedostacima: tačnost, frekvencija uzorkovanja, inertnost mernog uređaja i osetljivost na spoljne faktore. U cilju prevazilaženja navedenih nedostataka predlaže se alternativna metoda, zasnovana na tehnikama obrade slika iz video zapisa laboratorijskog eksperimenta. Pored opisa metodologije i njene primene na model vodostana pri brzim oscilacijama nivoa, ovaj rad prikazuje i poređenje dobijenih rezultata merenja sa dve tradicionalne metode: (1) ultražvučno merenje udaljenosti, i (2) merenje pritiska u tački. Pokazano je da je predložena metoda uporedive tačnosti, da ima niži nivo šuma i da je manje osetljiva na uticaj spoljnih faktora. Zbog svega navedenog, prikazana metoda može se koristiti kao adekvatna alternativa klasičnim mernim tehnikama u laboratorijskim uslovima.
PB  - Srpsko društo za odvodnjavanje i navodnjavanje
T2  - Vodoprivreda
T1  - Detekcija nivoa u laboratorijskim kanalima primenom tehnike obrade slika
IS  - 300-302
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1867
ER  - 

@article{
author = "Marjanović, Dušan and Vićanović, Ivana and Ljubičić, Robert and Zindović, Budo and Savić, Ljubodrag",
year = "2019",
abstract = "Određivanje i praćenje promena nivoa vode u laboratorijskim uslovima primenom tradicionalnih mernih metoda opterećeno je raznim nedostacima: tačnost, frekvencija uzorkovanja, inertnost mernog uređaja i osetljivost na spoljne faktore. U cilju prevazilaženja navedenih nedostataka predlaže se alternativna metoda, zasnovana na tehnikama obrade slika iz video zapisa laboratorijskog eksperimenta. Pored opisa metodologije i njene primene na model vodostana pri brzim oscilacijama nivoa, ovaj rad prikazuje i poređenje dobijenih rezultata merenja sa dve tradicionalne metode: (1) ultražvučno merenje udaljenosti, i (2) merenje pritiska u tački. Pokazano je da je predložena metoda uporedive tačnosti, da ima niži nivo šuma i da je manje osetljiva na uticaj spoljnih faktora. Zbog svega navedenog, prikazana metoda može se koristiti kao adekvatna alternativa klasičnim mernim tehnikama u laboratorijskim uslovima.",
publisher = "Srpsko društo za odvodnjavanje i navodnjavanje",
journal = "Vodoprivreda",
title = "Detekcija nivoa u laboratorijskim kanalima primenom tehnike obrade slika",
number = "300-302",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1867"
}

Marjanović, D., Vićanović, I., Ljubičić, R., Zindović, B.,& Savić, L.. (2019). Detekcija nivoa u laboratorijskim kanalima primenom tehnike obrade slika. in Vodoprivreda
Srpsko društo za odvodnjavanje i navodnjavanje., 51(300-302).
https://hdl.handle.net/21.15107/rcub_grafar_1867

Marjanović D, Vićanović I, Ljubičić R, Zindović B, Savić L. Detekcija nivoa u laboratorijskim kanalima primenom tehnike obrade slika. in Vodoprivreda. 2019;51(300-302).
https://hdl.handle.net/21.15107/rcub_grafar_1867 .

Marjanović, Dušan, Vićanović, Ivana, Ljubičić, Robert, Zindović, Budo, Savić, Ljubodrag, "Detekcija nivoa u laboratorijskim kanalima primenom tehnike obrade slika" in Vodoprivreda, 51, no. 300-302 (2019),
https://hdl.handle.net/21.15107/rcub_grafar_1867 .

TY  - CONF
AU  - Ljubičić, Robert
AU  - Vićanović, Ivana
AU  - Zindović, Budo
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1868
AB  - Hydraulic jumps exhibit a high degree of free-surface oscillations, triggered by intense turbulence and aeration.
These processes are difficult to model numerically and are frequently investigated on a scale model. However,
measuring the oscillatory characteristics of the hydraulic jump is not without issues, as the majority of available
methods are not intended for tracking instantaneous depth profile or free-surface interface (FSI). Some methods
are limited to a selected set of few predetermined points, and are sensitive to variations of secondary
characteristics of the hydraulic jump: point gauges are sensitive to aeration rate and rate of the free-surface
changes, electroconductive and optical probes require direct contact with the air-water mixture (disrupting the
free surface), while the ultrasonic distance measurement accuracy is severely impacted by the shape of the
free surface and aeration rate. To alleviate these issues, we propose the application of the non-intrusive method
based on image processing techniques to detect the instantaneous FSI. The first step is to record the freesurface region in a series of images, with a predefined constant time shift. Subsequently, the FSI along the
hydraulic jump is detected in every image. Presented method was used to reconstruct temporal evolution of the
depth profile from the FSI position in the recorded images. The obtained dominant FSI oscillation frequencies
along the hydraulic jump show good agreement with previous research. Results also show that the proposed
approach is more robust than previously available methods – minor sensitivity to camera shooting angle, rate
of the free-surface change, surface aeration variability, etc. Method is also very simple, with only a few tunable
parameters, and affordable, as the only required equipment is a camera. The preprocessing and calibration
steps needed to obtain reliable data for further processing are also described. Using method presented in this
paper, one can gain a better understanding of the characteristics of the hydraulic jump: instantaneous and timeaveraged FSI profile, as well as the frequency spectrum of FSI variations along the hydraulic jump. This can be
useful for the design of hydraulic structures, in particular – the hydraulic jump stilling basins.
PB  - IAHR
C3  - E-proceedings of the 38th IAHR World Congress
T1  - Image Processing for Hydraulic Jump Free-Surface Detection
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1868
ER  - 

@conference{
author = "Ljubičić, Robert and Vićanović, Ivana and Zindović, Budo and Kapor, Radomir and Savić, Ljubodrag",
year = "2019",
abstract = "Hydraulic jumps exhibit a high degree of free-surface oscillations, triggered by intense turbulence and aeration.
These processes are difficult to model numerically and are frequently investigated on a scale model. However,
measuring the oscillatory characteristics of the hydraulic jump is not without issues, as the majority of available
methods are not intended for tracking instantaneous depth profile or free-surface interface (FSI). Some methods
are limited to a selected set of few predetermined points, and are sensitive to variations of secondary
characteristics of the hydraulic jump: point gauges are sensitive to aeration rate and rate of the free-surface
changes, electroconductive and optical probes require direct contact with the air-water mixture (disrupting the
free surface), while the ultrasonic distance measurement accuracy is severely impacted by the shape of the
free surface and aeration rate. To alleviate these issues, we propose the application of the non-intrusive method
based on image processing techniques to detect the instantaneous FSI. The first step is to record the freesurface region in a series of images, with a predefined constant time shift. Subsequently, the FSI along the
hydraulic jump is detected in every image. Presented method was used to reconstruct temporal evolution of the
depth profile from the FSI position in the recorded images. The obtained dominant FSI oscillation frequencies
along the hydraulic jump show good agreement with previous research. Results also show that the proposed
approach is more robust than previously available methods – minor sensitivity to camera shooting angle, rate
of the free-surface change, surface aeration variability, etc. Method is also very simple, with only a few tunable
parameters, and affordable, as the only required equipment is a camera. The preprocessing and calibration
steps needed to obtain reliable data for further processing are also described. Using method presented in this
paper, one can gain a better understanding of the characteristics of the hydraulic jump: instantaneous and timeaveraged FSI profile, as well as the frequency spectrum of FSI variations along the hydraulic jump. This can be
useful for the design of hydraulic structures, in particular – the hydraulic jump stilling basins.",
publisher = "IAHR",
journal = "E-proceedings of the 38th IAHR World Congress",
title = "Image Processing for Hydraulic Jump Free-Surface Detection",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1868"
}

Ljubičić, R., Vićanović, I., Zindović, B., Kapor, R.,& Savić, L.. (2019). Image Processing for Hydraulic Jump Free-Surface Detection. in E-proceedings of the 38th IAHR World Congress
IAHR..
https://hdl.handle.net/21.15107/rcub_grafar_1868

Ljubičić R, Vićanović I, Zindović B, Kapor R, Savić L. Image Processing for Hydraulic Jump Free-Surface Detection. in E-proceedings of the 38th IAHR World Congress. 2019;.
https://hdl.handle.net/21.15107/rcub_grafar_1868 .

Ljubičić, Robert, Vićanović, Ivana, Zindović, Budo, Kapor, Radomir, Savić, Ljubodrag, "Image Processing for Hydraulic Jump Free-Surface Detection" in E-proceedings of the 38th IAHR World Congress (2019),
https://hdl.handle.net/21.15107/rcub_grafar_1868 .

TY  - CONF
AU  - Milašinović, Miloš
AU  - Zindović, Budo
AU  - Rosić, Nikola
AU  - Prodanović, Dušan
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2093
AB  - Flood risks management is based on data obtained by different forecasts. Forecasts are often based on hydrological-hydrodynamic models. These models are calibrated using selected time-series from the past. However, even calibrated models in later exploitation phases can produce solutions of unsatisfying accuracy. Some of the reasons are uncertainty in the initial and boundary conditions, uncertainty of the input data and uncertainty in riverbed geometry. The aim of the assimilation is to improve the results obtained from the previously calibrated model by coupling it with observed data. To assimilate, the model is run for a short previous period and the state of the model is adjusted to observed data. The corrected model state is then used as an initial state to run the model with for short-term forecast of input data. Assimilation method based on the PID controller for 1D river hydrodynamic models is analyzed in this paper. This method adjusts the state in the hydrodynamic models according to the measurements indirectly by adding or subtracting the discharge in the junction/sections with measured water level. The influence of the hydrodynamic model complexity is analyzed, comparing three models: non-inertia model, diffusion wave and dynamic wave model. Results show that PID control can be adequately used even coupled with simplified hydraulic models for short-term assimilation and forecast, without significant loss of accuracy. PID control-based data assimilation also yields significant reduction in the computational runtime.
PB  - Springer
C3  - Advances in Hydroinformatics - SimHydro 2019
T1  - PID Controllers as Data Assimilation Tool for 1D Hydrodynamic Models of Different Complexity
DO  - 10.1007/978-981-15-5436-0_76
ER  - 

@conference{
author = "Milašinović, Miloš and Zindović, Budo and Rosić, Nikola and Prodanović, Dušan",
year = "2019",
abstract = "Flood risks management is based on data obtained by different forecasts. Forecasts are often based on hydrological-hydrodynamic models. These models are calibrated using selected time-series from the past. However, even calibrated models in later exploitation phases can produce solutions of unsatisfying accuracy. Some of the reasons are uncertainty in the initial and boundary conditions, uncertainty of the input data and uncertainty in riverbed geometry. The aim of the assimilation is to improve the results obtained from the previously calibrated model by coupling it with observed data. To assimilate, the model is run for a short previous period and the state of the model is adjusted to observed data. The corrected model state is then used as an initial state to run the model with for short-term forecast of input data. Assimilation method based on the PID controller for 1D river hydrodynamic models is analyzed in this paper. This method adjusts the state in the hydrodynamic models according to the measurements indirectly by adding or subtracting the discharge in the junction/sections with measured water level. The influence of the hydrodynamic model complexity is analyzed, comparing three models: non-inertia model, diffusion wave and dynamic wave model. Results show that PID control can be adequately used even coupled with simplified hydraulic models for short-term assimilation and forecast, without significant loss of accuracy. PID control-based data assimilation also yields significant reduction in the computational runtime.",
publisher = "Springer",
journal = "Advances in Hydroinformatics - SimHydro 2019",
title = "PID Controllers as Data Assimilation Tool for 1D Hydrodynamic Models of Different Complexity",
doi = "10.1007/978-981-15-5436-0_76"
}

Milašinović, M., Zindović, B., Rosić, N.,& Prodanović, D.. (2019). PID Controllers as Data Assimilation Tool for 1D Hydrodynamic Models of Different Complexity. in Advances in Hydroinformatics - SimHydro 2019
Springer..
https://doi.org/10.1007/978-981-15-5436-0_76

Milašinović M, Zindović B, Rosić N, Prodanović D. PID Controllers as Data Assimilation Tool for 1D Hydrodynamic Models of Different Complexity. in Advances in Hydroinformatics - SimHydro 2019. 2019;.
doi:10.1007/978-981-15-5436-0_76 .

Milašinović, Miloš, Zindović, Budo, Rosić, Nikola, Prodanović, Dušan, "PID Controllers as Data Assimilation Tool for 1D Hydrodynamic Models of Different Complexity" in Advances in Hydroinformatics - SimHydro 2019 (2019),
https://doi.org/10.1007/978-981-15-5436-0_76 . .

TY  - JOUR
AU  - Milašinović, Miloš
AU  - Zindović, Budo
AU  - Rosić, Nikola
AU  - Prodanović, Dušan
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1108
T2  - Vodoprivreda
T1  - Analiza uticaja kompleksnosti 1D modela tečenja na postupak asimilacije podataka zasnovane na primeni PID kontrolera - preliminarni rezultati
EP  - 254
SP  - 245
VL  - 50
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1108
ER  - 

@article{
author = "Milašinović, Miloš and Zindović, Budo and Rosić, Nikola and Prodanović, Dušan",
year = "2018",
journal = "Vodoprivreda",
title = "Analiza uticaja kompleksnosti 1D modela tečenja na postupak asimilacije podataka zasnovane na primeni PID kontrolera - preliminarni rezultati",
pages = "254-245",
volume = "50",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1108"
}

Milašinović, M., Zindović, B., Rosić, N.,& Prodanović, D.. (2018). Analiza uticaja kompleksnosti 1D modela tečenja na postupak asimilacije podataka zasnovane na primeni PID kontrolera - preliminarni rezultati. in Vodoprivreda, 50, 245-254.
https://hdl.handle.net/21.15107/rcub_grafar_1108

Milašinović M, Zindović B, Rosić N, Prodanović D. Analiza uticaja kompleksnosti 1D modela tečenja na postupak asimilacije podataka zasnovane na primeni PID kontrolera - preliminarni rezultati. in Vodoprivreda. 2018;50:245-254.
https://hdl.handle.net/21.15107/rcub_grafar_1108 .

Milašinović, Miloš, Zindović, Budo, Rosić, Nikola, Prodanović, Dušan, "Analiza uticaja kompleksnosti 1D modela tečenja na postupak asimilacije podataka zasnovane na primeni PID kontrolera - preliminarni rezultati" in Vodoprivreda, 50 (2018):245-254,
https://hdl.handle.net/21.15107/rcub_grafar_1108 .

TY  - JOUR
AU  - Ljubičić, Robert
AU  - Zindović, Budo
AU  - Vojt, Predrag
AU  - Pavlović, Dragutin
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/940
AB  - The performance of flat stilling basins can be inadequate for conditions when the tailwater depth is insufficient for hydraulic jump stabilization. In such cases, adverse-slope stilling basins can be used because they reduce the necessary tailwater depth. Sloped basins combined with smooth chutes have been the subject of many studies. However, limited research has been done for basins with stepped chutes, which are characterized by intensive flow aeration and high energy dissipation. Based on our scale-model experimental measurements of depth, velocity, and air concentration, we present a momentum-based method to characterize such hydraulic jump: the sequent depth ratio, the length of hydraulic jump roller, and energy dissipation effectiveness. The proposed method provides better agreement with experimental data when compared to existing methods and can be used for preliminary design.
PB  - MDPI AG
T2  - Water
T1  - Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways
IS  - 4
VL  - 10
DO  - 10.3390/w10040460
ER  - 

@article{
author = "Ljubičić, Robert and Zindović, Budo and Vojt, Predrag and Pavlović, Dragutin and Kapor, Radomir and Savić, Ljubodrag",
year = "2018",
abstract = "The performance of flat stilling basins can be inadequate for conditions when the tailwater depth is insufficient for hydraulic jump stabilization. In such cases, adverse-slope stilling basins can be used because they reduce the necessary tailwater depth. Sloped basins combined with smooth chutes have been the subject of many studies. However, limited research has been done for basins with stepped chutes, which are characterized by intensive flow aeration and high energy dissipation. Based on our scale-model experimental measurements of depth, velocity, and air concentration, we present a momentum-based method to characterize such hydraulic jump: the sequent depth ratio, the length of hydraulic jump roller, and energy dissipation effectiveness. The proposed method provides better agreement with experimental data when compared to existing methods and can be used for preliminary design.",
publisher = "MDPI AG",
journal = "Water",
title = "Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways",
number = "4",
volume = "10",
doi = "10.3390/w10040460"
}

Ljubičić, R., Zindović, B., Vojt, P., Pavlović, D., Kapor, R.,& Savić, L.. (2018). Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways. in Water
MDPI AG., 10(4).
https://doi.org/10.3390/w10040460

Ljubičić R, Zindović B, Vojt P, Pavlović D, Kapor R, Savić L. Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways. in Water. 2018;10(4).
doi:10.3390/w10040460 .

Ljubičić, Robert, Zindović, Budo, Vojt, Predrag, Pavlović, Dragutin, Kapor, Radomir, Savić, Ljubodrag, "Hydraulic Jumps in Adverse-Slope Stilling Basins for Stepped Spillways" in Water, 10, no. 4 (2018),
https://doi.org/10.3390/w10040460 . .

TY  - THES
AU  - Zindović, Budo
PY  - 2018
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=5884
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:17837/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=513792146
UR  - http://nardus.mpn.gov.rs/123456789/9603
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1706
AB  - Степенасти брзотоци су популарна мера за дисипацију енергије преливене воде.Своју популарност дугују добрим дисипационим карактеристикама и нижом ценомизградње у односу на класичне брзотоке са глатним дном. Ефикасност дисипацијеенергије степенастог брзотока расте са повећањем његове ширине. У овој дисер-тацији анализиране су хидрауличке последице струјања у степенастом брзотоку сапостепеним смањењем ширине канала. Истраживање је спроведено мерењима надва физичка модела и нумеричким симулацијама...
AB  - Stepped spillways are popular energy dissipators. Compared to classic smooth spillways,stepped spillways present a good balance between energy dissipation and low constructioncosts. Energy efficiency dissipation is proportional to spillway width. This dissertationdeals with hydraulics of the gradually converging stepped spillways. The research includedmeasurements on two scale-models and numerical simulations...
PB  - Универзитет у Београду, Грађевински факултет
T2  - Универзитет у Београду
T1  - Струјање у степенастом брзотоку са постепеним смањењем ширине корита
UR  - https://hdl.handle.net/21.15107/rcub_nardus_9603
ER  - 

@phdthesis{
author = "Zindović, Budo",
year = "2018",
abstract = "Степенасти брзотоци су популарна мера за дисипацију енергије преливене воде.Своју популарност дугују добрим дисипационим карактеристикама и нижом ценомизградње у односу на класичне брзотоке са глатним дном. Ефикасност дисипацијеенергије степенастог брзотока расте са повећањем његове ширине. У овој дисер-тацији анализиране су хидрауличке последице струјања у степенастом брзотоку сапостепеним смањењем ширине канала. Истраживање је спроведено мерењима надва физичка модела и нумеричким симулацијама..., Stepped spillways are popular energy dissipators. Compared to classic smooth spillways,stepped spillways present a good balance between energy dissipation and low constructioncosts. Energy efficiency dissipation is proportional to spillway width. This dissertationdeals with hydraulics of the gradually converging stepped spillways. The research includedmeasurements on two scale-models and numerical simulations...",
publisher = "Универзитет у Београду, Грађевински факултет",
journal = "Универзитет у Београду",
title = "Струјање у степенастом брзотоку са постепеним смањењем ширине корита",
url = "https://hdl.handle.net/21.15107/rcub_nardus_9603"
}

Zindović, B.. (2018). Струјање у степенастом брзотоку са постепеним смањењем ширине корита. in Универзитет у Београду
Универзитет у Београду, Грађевински факултет..
https://hdl.handle.net/21.15107/rcub_nardus_9603

Zindović B. Струјање у степенастом брзотоку са постепеним смањењем ширине корита. in Универзитет у Београду. 2018;.
https://hdl.handle.net/21.15107/rcub_nardus_9603 .

Zindović, Budo, "Струјање у степенастом брзотоку са постепеним смањењем ширине корита" in Универзитет у Београду (2018),
https://hdl.handle.net/21.15107/rcub_nardus_9603 .

TY  - CONF
AU  - Ljubičić, Robert
AU  - Zindović, Budo
AU  - Savić, Ljubodrag
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1865
AB  - Stilling basins are the most commonly used energy dissipating structure for large dams, due to their high operating reliability under a wide range of inflow conditions. However, unsatisfactory tailwater conditions, primarily low tailwater level, can necessitate the use of additional structural solutions for the stabilization of the occurring hydraulic jump. A possible solution to this issue is the use of the adverse-sloped basins, which use the weight of the water in the jump for jump stabilization. Adverse-slope basin design had attracted the interest of engineers and researchers in the last decade as a simple method for the reduction of the required tailwater depth and basin length. To this date, a number of analytical and empirical methods for the estimation of features of such jumps are developed. However, the applicability of these methods is hindered by their diverse accuracy and/or complexity. Based on the experimental measurements on a stepped spillway model, a multilayer perceptron model (MLP) was trained for the estimation of jump characteristics. An accuracy and sensitivity analyses were also performed for each used method. It was demonstrated that machine learning techniques can potentially provide significantly better results than certain analytical and empirical methods. This allows a simpler, faster, yet accurate analysis of the occurring hydraulic conditions in the early stages of design.
PB  - SDHI/SDH
C3  - Zbornik radova 18. savetovanja SDHI/SDH
T1  - Adverse-slope stilling basins: machine learning approach to estimation of hydraulic jump features
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1865
ER  - 

@conference{
author = "Ljubičić, Robert and Zindović, Budo and Savić, Ljubodrag",
year = "2018",
abstract = "Stilling basins are the most commonly used energy dissipating structure for large dams, due to their high operating reliability under a wide range of inflow conditions. However, unsatisfactory tailwater conditions, primarily low tailwater level, can necessitate the use of additional structural solutions for the stabilization of the occurring hydraulic jump. A possible solution to this issue is the use of the adverse-sloped basins, which use the weight of the water in the jump for jump stabilization. Adverse-slope basin design had attracted the interest of engineers and researchers in the last decade as a simple method for the reduction of the required tailwater depth and basin length. To this date, a number of analytical and empirical methods for the estimation of features of such jumps are developed. However, the applicability of these methods is hindered by their diverse accuracy and/or complexity. Based on the experimental measurements on a stepped spillway model, a multilayer perceptron model (MLP) was trained for the estimation of jump characteristics. An accuracy and sensitivity analyses were also performed for each used method. It was demonstrated that machine learning techniques can potentially provide significantly better results than certain analytical and empirical methods. This allows a simpler, faster, yet accurate analysis of the occurring hydraulic conditions in the early stages of design.",
publisher = "SDHI/SDH",
journal = "Zbornik radova 18. savetovanja SDHI/SDH",
title = "Adverse-slope stilling basins: machine learning approach to estimation of hydraulic jump features",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1865"
}

Ljubičić, R., Zindović, B.,& Savić, L.. (2018). Adverse-slope stilling basins: machine learning approach to estimation of hydraulic jump features. in Zbornik radova 18. savetovanja SDHI/SDH
SDHI/SDH..
https://hdl.handle.net/21.15107/rcub_grafar_1865

Ljubičić R, Zindović B, Savić L. Adverse-slope stilling basins: machine learning approach to estimation of hydraulic jump features. in Zbornik radova 18. savetovanja SDHI/SDH. 2018;.
https://hdl.handle.net/21.15107/rcub_grafar_1865 .

Ljubičić, Robert, Zindović, Budo, Savić, Ljubodrag, "Adverse-slope stilling basins: machine learning approach to estimation of hydraulic jump features" in Zbornik radova 18. savetovanja SDHI/SDH (2018),
https://hdl.handle.net/21.15107/rcub_grafar_1865 .

TY  - CONF
AU  - Ljubičić, Robert
AU  - Zindović, Budo
AU  - Stanić, Miloš
AU  - Savić, Ljubodrag
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1564
PB  - Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Budapest
C3  - Uniting Europe for clean water: cross-border cooperation of old, new and candidate countries of EU for identifying problems, finding causes and solutions : book of abstracts
T1  - Spillway Design Optimization for Embankment Dams Using Genetic Algorithms
EP  - 145
SP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1564
ER  - 

@conference{
author = "Ljubičić, Robert and Zindović, Budo and Stanić, Miloš and Savić, Ljubodrag",
year = "2017",
publisher = "Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Budapest",
journal = "Uniting Europe for clean water: cross-border cooperation of old, new and candidate countries of EU for identifying problems, finding causes and solutions : book of abstracts",
title = "Spillway Design Optimization for Embankment Dams Using Genetic Algorithms",
pages = "145-138",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1564"
}

Ljubičić, R., Zindović, B., Stanić, M.,& Savić, L.. (2017). Spillway Design Optimization for Embankment Dams Using Genetic Algorithms. in Uniting Europe for clean water: cross-border cooperation of old, new and candidate countries of EU for identifying problems, finding causes and solutions : book of abstracts
Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Budapest., 138-145.
https://hdl.handle.net/21.15107/rcub_grafar_1564

Ljubičić R, Zindović B, Stanić M, Savić L. Spillway Design Optimization for Embankment Dams Using Genetic Algorithms. in Uniting Europe for clean water: cross-border cooperation of old, new and candidate countries of EU for identifying problems, finding causes and solutions : book of abstracts. 2017;:138-145.
https://hdl.handle.net/21.15107/rcub_grafar_1564 .

Ljubičić, Robert, Zindović, Budo, Stanić, Miloš, Savić, Ljubodrag, "Spillway Design Optimization for Embankment Dams Using Genetic Algorithms" in Uniting Europe for clean water: cross-border cooperation of old, new and candidate countries of EU for identifying problems, finding causes and solutions : book of abstracts (2017):138-145,
https://hdl.handle.net/21.15107/rcub_grafar_1564 .

TY  - CONF
AU  - Ljubičić, Robert
AU  - Babić, Filip
AU  - Zindović, Budo
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2017
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1523
PB  - Građevinski fakultet, Subotica
C3  - Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017
T1  - Estimation of downstream sequent depth in B-F hydraulic jumps for stilling basins of stepped spillways
T1  - Proračun spregnute dubine u hidrauličkom skoku B-F tipa kod umirujućih bazena stepenastih brzotoka
EP  - 644
SP  - 635
VL  - 33
DO  - 10.14415/konferencijagfs2017.068
ER  - 

@conference{
author = "Ljubičić, Robert and Babić, Filip and Zindović, Budo and Kapor, Radomir and Savić, Ljubodrag",
year = "2017",
publisher = "Građevinski fakultet, Subotica",
journal = "Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017",
title = "Estimation of downstream sequent depth in B-F hydraulic jumps for stilling basins of stepped spillways, Proračun spregnute dubine u hidrauličkom skoku B-F tipa kod umirujućih bazena stepenastih brzotoka",
pages = "644-635",
volume = "33",
doi = "10.14415/konferencijagfs2017.068"
}

Ljubičić, R., Babić, F., Zindović, B., Kapor, R.,& Savić, L.. (2017). Estimation of downstream sequent depth in B-F hydraulic jumps for stilling basins of stepped spillways. in Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017
Građevinski fakultet, Subotica., 33, 635-644.
https://doi.org/10.14415/konferencijagfs2017.068

Ljubičić R, Babić F, Zindović B, Kapor R, Savić L. Estimation of downstream sequent depth in B-F hydraulic jumps for stilling basins of stepped spillways. in Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017. 2017;33:635-644.
doi:10.14415/konferencijagfs2017.068 .

Ljubičić, Robert, Babić, Filip, Zindović, Budo, Kapor, Radomir, Savić, Ljubodrag, "Estimation of downstream sequent depth in B-F hydraulic jumps for stilling basins of stepped spillways" in Zbornik radova 5. međunarodne konferencije Savremena dostignuća u građevinarstvu 2017, 33 (2017):635-644,
https://doi.org/10.14415/konferencijagfs2017.068 . .