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  - CONF
AU  - Ivetić, Damjan
AU  - Prodanović, Dušan
AU  - Milivojević, Nikola
AU  - Vojt, Predrag
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2834
AB  - To allow for the reliable hydraulic efficiency estimation of the tubular turbines before and after their revitalization at the Hydro Power Plant (HPP) Iron Gate 2, a novel flow measurement system was designed and tested on two turbines. In this paper the details of used approach for the assessment of the flow measurement uncertainty are presented. The presented methodology is tailored for specific application of the Velocity – Area flow measurements at HPP, based on the utilization of electro-magnetic velocity meters (EMVM), instead of traditional propeller current meters. Although the procedure for the assessment of the flow measurement uncertainty in similar cases of low-head plants and short intakes can be found in the literature, the adverse flow conditions, novel EMVM sensors and the specific operating modes have instigated a need for modifications and improvements of the procedure. Assuming analogy between the current meters and EM meters, the IEC 60041 and ISO 3354 procedure for flow rate measurement uncertainty assessment was used as a template, with implemented moderate changes accounting for the features of the applied measurement. Selected flow measurements from the 2020. campaign are analyzed, with an emphasis on the variation of the magnitudes of the measurement uncertainty components.
PB  - International group for hydraulic efficiency measurement (IGHEM)
C3  - 13th International conference on hydraulic efficiency measurement, Grenoble, France
T1  - Uncertainty assessment of flow measurements at Iron Gate 2
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2834
ER  - 

@conference{
author = "Ivetić, Damjan and Prodanović, Dušan and Milivojević, Nikola and Vojt, Predrag",
year = "2022",
abstract = "To allow for the reliable hydraulic efficiency estimation of the tubular turbines before and after their revitalization at the Hydro Power Plant (HPP) Iron Gate 2, a novel flow measurement system was designed and tested on two turbines. In this paper the details of used approach for the assessment of the flow measurement uncertainty are presented. The presented methodology is tailored for specific application of the Velocity – Area flow measurements at HPP, based on the utilization of electro-magnetic velocity meters (EMVM), instead of traditional propeller current meters. Although the procedure for the assessment of the flow measurement uncertainty in similar cases of low-head plants and short intakes can be found in the literature, the adverse flow conditions, novel EMVM sensors and the specific operating modes have instigated a need for modifications and improvements of the procedure. Assuming analogy between the current meters and EM meters, the IEC 60041 and ISO 3354 procedure for flow rate measurement uncertainty assessment was used as a template, with implemented moderate changes accounting for the features of the applied measurement. Selected flow measurements from the 2020. campaign are analyzed, with an emphasis on the variation of the magnitudes of the measurement uncertainty components.",
publisher = "International group for hydraulic efficiency measurement (IGHEM)",
journal = "13th International conference on hydraulic efficiency measurement, Grenoble, France",
title = "Uncertainty assessment of flow measurements at Iron Gate 2",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2834"
}

Ivetić, D., Prodanović, D., Milivojević, N.,& Vojt, P.. (2022). Uncertainty assessment of flow measurements at Iron Gate 2. in 13th International conference on hydraulic efficiency measurement, Grenoble, France
International group for hydraulic efficiency measurement (IGHEM)..
https://hdl.handle.net/21.15107/rcub_grafar_2834

Ivetić D, Prodanović D, Milivojević N, Vojt P. Uncertainty assessment of flow measurements at Iron Gate 2. in 13th International conference on hydraulic efficiency measurement, Grenoble, France. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2834 .

Ivetić, Damjan, Prodanović, Dušan, Milivojević, Nikola, Vojt, Predrag, "Uncertainty assessment of flow measurements at Iron Gate 2" in 13th International conference on hydraulic efficiency measurement, Grenoble, France (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2834 .

TY  - CONF
AU  - Prodanović, Dušan
AU  - Ivetić, Damjan
AU  - Milivojević, Nikola
AU  - Vojt, Predrag
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2833
AB  - Flow measurement of low head turbines, with short intakes like bulb turbines is challenging since there is no “regular” cross-section with fully developed velocity profile. In most situations the flow data during field turbine acceptance tests are obtained using the index method, with flow coefficients transferred from physical model tests done in the laboratory. In the non-standard situations, with adverse flow conditions this may lead to unpredicted flow rate uncertainty. This paper presents the used methodology and results of flow measurement at inlets of two bulb turbines of Hydro Power Plant (HPP) Iron Gate 2 (Danube river). Turbines are Kaplan, with low head (2.5 – 12.5 m), 27 MW and maximal flow rate 420 m3/s.
Due to HPP’s disposition the inflow angle (in a “horizontal” plane and in respect to the turbine axis) can be up to 400. Even reverse flow directions in upper regions of cross-section can occur.  The movable 14.5x3.1 m steel frame, shaped to minimize flow disturbances was used at the intake of turbine, upstream of the trash rack, to traverse the inflow cross section 14.5x26 m. The 15 spherical 3D electromagnetic velocity meters capable of bi-directional measurements were mounted on the frame, while redundant measurement were made using 2 ADVs. Two measurement strategies were used: incremental with 18 profiles and 10 min averaging time at each profile and continuous using constant lifting speed of 0.05 m/s. Uncertainty assessment procedure yielded discharge measurement uncertainties over 1 % for incremental, and up to 5 % for continuous traversing.
PB  - International group for hydraulic efficiency measurement (IGHEM)
C3  - 13th International conference on hydraulic efficiency measurement, Grenoble, France
T1  - Flow measurement methodology for low head and short intake bulb turbines - Iron Gate 2 case
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2833
ER  - 

@conference{
author = "Prodanović, Dušan and Ivetić, Damjan and Milivojević, Nikola and Vojt, Predrag",
year = "2022",
abstract = "Flow measurement of low head turbines, with short intakes like bulb turbines is challenging since there is no “regular” cross-section with fully developed velocity profile. In most situations the flow data during field turbine acceptance tests are obtained using the index method, with flow coefficients transferred from physical model tests done in the laboratory. In the non-standard situations, with adverse flow conditions this may lead to unpredicted flow rate uncertainty. This paper presents the used methodology and results of flow measurement at inlets of two bulb turbines of Hydro Power Plant (HPP) Iron Gate 2 (Danube river). Turbines are Kaplan, with low head (2.5 – 12.5 m), 27 MW and maximal flow rate 420 m3/s.
Due to HPP’s disposition the inflow angle (in a “horizontal” plane and in respect to the turbine axis) can be up to 400. Even reverse flow directions in upper regions of cross-section can occur.  The movable 14.5x3.1 m steel frame, shaped to minimize flow disturbances was used at the intake of turbine, upstream of the trash rack, to traverse the inflow cross section 14.5x26 m. The 15 spherical 3D electromagnetic velocity meters capable of bi-directional measurements were mounted on the frame, while redundant measurement were made using 2 ADVs. Two measurement strategies were used: incremental with 18 profiles and 10 min averaging time at each profile and continuous using constant lifting speed of 0.05 m/s. Uncertainty assessment procedure yielded discharge measurement uncertainties over 1 % for incremental, and up to 5 % for continuous traversing.",
publisher = "International group for hydraulic efficiency measurement (IGHEM)",
journal = "13th International conference on hydraulic efficiency measurement, Grenoble, France",
title = "Flow measurement methodology for low head and short intake bulb turbines - Iron Gate 2 case",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2833"
}

Prodanović, D., Ivetić, D., Milivojević, N.,& Vojt, P.. (2022). Flow measurement methodology for low head and short intake bulb turbines - Iron Gate 2 case. in 13th International conference on hydraulic efficiency measurement, Grenoble, France
International group for hydraulic efficiency measurement (IGHEM)..
https://hdl.handle.net/21.15107/rcub_grafar_2833

Prodanović D, Ivetić D, Milivojević N, Vojt P. Flow measurement methodology for low head and short intake bulb turbines - Iron Gate 2 case. in 13th International conference on hydraulic efficiency measurement, Grenoble, France. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2833 .

Prodanović, Dušan, Ivetić, Damjan, Milivojević, Nikola, Vojt, Predrag, "Flow measurement methodology for low head and short intake bulb turbines - Iron Gate 2 case" in 13th International conference on hydraulic efficiency measurement, Grenoble, France (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2833 .

TY  - CONF
AU  - Ivetić, Damjan
AU  - Prodanović, Dušan
AU  - Vojt, Predrag
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2830
AB  - Za potrebe pouzdanije procene hidrauličke efikasnosti cevnih agregata na HE Đerdap 2, kao i unapređenja efikasnosti nakon revitalizacije agregata, projektovan je i primenjen inovativni sistem za posredno merenje protoka kroz jedan agregat. Merni sistem se može postaviti na ulazu u turbinu uzvodno od grube rešetke. Koristi se pristup Brzina – Proticajni presek, gde se polje brzina profiliše (meri) pomoću 15 novorazvijenih 3D elektromagnetnih (EM) sondi, horizontalno raspoređenih na čelični ram koji se podiže po visini proticajnog preseka. Čelični ram je opremljen i sa dva redudantna akustična Dopler senzora brzine (takođe mere sve tri komponente vektora brzine), merilima visine rama i dubine vode. Mogu se koristiti dva režima rada mernog sistema: inkrementalni (sporiji i pouzdaniji) i kontinualni (brži ali manje pouzdan). Budući da je merni sistem sinhronizovan sa lokalnim SCADA sistemom, u konačnoj obradi podataka i obračunu protoka, koriste se i odgovarajući podaci o radu turbine. Poseban izazov u proračunu protoka izvedenim sistemom predstavlja procena merne nesigurnosti (grešku ipak ne možemo znati jer nikad i ne poznajemo tačnu vrednost merne veličine). Kako bi se u proceni merne nesigurnosti, obuhvatile specifičnosti korišćene merne opreme (sa akcentom na 3D EM sonde), režima rada mernog sistema i hidrauličkih uslova na mernim mestima (koso dostrujavanje), razvijena je posebna procedura za proračun komponenata (doprinosa) i konačni obračun ukupne nesigurnosti izmerenog protoka na agregatima. Procedurom su obuhvaćeni doprinosi svih relevantnih veličina tokom trajanja merenja, postupka ekstrapolacije i interpolacije u obradi podataka, kao i integracije konačnog rasporeda brzina. Sam postupak procene merne nesigurnosti je integrisan i u namenski korisnički softver za obradu prikupljenih podataka. U ovom radu predstavljena je korišćena procedura za procenu merne nesigurnosti, kao i rezultati njene primene na konačnom broju izmerenih podataka. Analizirani su uticaji pojedinih komponenata mernih nesigurnosti kao i njihova promena u zavisnosti od korišćenog režima rada.
PB  - Društvo Metrologa
C3  - Kongres metrologa 2022
T1  - Procena merne nesigurnosti pri merenju protoka profilisanjem polja brzina
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2830
ER  - 

@conference{
author = "Ivetić, Damjan and Prodanović, Dušan and Vojt, Predrag",
year = "2022",
abstract = "Za potrebe pouzdanije procene hidrauličke efikasnosti cevnih agregata na HE Đerdap 2, kao i unapređenja efikasnosti nakon revitalizacije agregata, projektovan je i primenjen inovativni sistem za posredno merenje protoka kroz jedan agregat. Merni sistem se može postaviti na ulazu u turbinu uzvodno od grube rešetke. Koristi se pristup Brzina – Proticajni presek, gde se polje brzina profiliše (meri) pomoću 15 novorazvijenih 3D elektromagnetnih (EM) sondi, horizontalno raspoređenih na čelični ram koji se podiže po visini proticajnog preseka. Čelični ram je opremljen i sa dva redudantna akustična Dopler senzora brzine (takođe mere sve tri komponente vektora brzine), merilima visine rama i dubine vode. Mogu se koristiti dva režima rada mernog sistema: inkrementalni (sporiji i pouzdaniji) i kontinualni (brži ali manje pouzdan). Budući da je merni sistem sinhronizovan sa lokalnim SCADA sistemom, u konačnoj obradi podataka i obračunu protoka, koriste se i odgovarajući podaci o radu turbine. Poseban izazov u proračunu protoka izvedenim sistemom predstavlja procena merne nesigurnosti (grešku ipak ne možemo znati jer nikad i ne poznajemo tačnu vrednost merne veličine). Kako bi se u proceni merne nesigurnosti, obuhvatile specifičnosti korišćene merne opreme (sa akcentom na 3D EM sonde), režima rada mernog sistema i hidrauličkih uslova na mernim mestima (koso dostrujavanje), razvijena je posebna procedura za proračun komponenata (doprinosa) i konačni obračun ukupne nesigurnosti izmerenog protoka na agregatima. Procedurom su obuhvaćeni doprinosi svih relevantnih veličina tokom trajanja merenja, postupka ekstrapolacije i interpolacije u obradi podataka, kao i integracije konačnog rasporeda brzina. Sam postupak procene merne nesigurnosti je integrisan i u namenski korisnički softver za obradu prikupljenih podataka. U ovom radu predstavljena je korišćena procedura za procenu merne nesigurnosti, kao i rezultati njene primene na konačnom broju izmerenih podataka. Analizirani su uticaji pojedinih komponenata mernih nesigurnosti kao i njihova promena u zavisnosti od korišćenog režima rada.",
publisher = "Društvo Metrologa",
journal = "Kongres metrologa 2022",
title = "Procena merne nesigurnosti pri merenju protoka profilisanjem polja brzina",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2830"
}

Ivetić, D., Prodanović, D.,& Vojt, P.. (2022). Procena merne nesigurnosti pri merenju protoka profilisanjem polja brzina. in Kongres metrologa 2022
Društvo Metrologa..
https://hdl.handle.net/21.15107/rcub_grafar_2830

Ivetić D, Prodanović D, Vojt P. Procena merne nesigurnosti pri merenju protoka profilisanjem polja brzina. in Kongres metrologa 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2830 .

Ivetić, Damjan, Prodanović, Dušan, Vojt, Predrag, "Procena merne nesigurnosti pri merenju protoka profilisanjem polja brzina" in Kongres metrologa 2022 (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2830 .

TY  - CONF
AU  - Vojt, Predrag
AU  - Prodanović, Dušan
AU  - Ivetić, Damjan
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2829
AB  - Druga najvažnija veličina u hidrotehničkoj praksi je protok vode i sa njom direktno povezana brzina vode (prva je, svakako, nivo/dubina odnosno, pritisak vode). Brzina vode se uglavnom meri posredno, korišćenjem nekog od odgovarajućih pretvarača, koje treba redovno kalibrisati. U sklopu hidrauličke laboratorije Instituta za vodoprivredu „Jaroslav Černi“ (IJČ) nalazi se 120 m dug kanal za kalibrisanje sondi za merenje brzine vode apsolutnom metodom, prema ISO 3445 standardu: kroz vodu koja miruje se zadatom brzinom vozi sonda, a brzina se određuje preko pređenog puta u jedinici vremena. Za potrebe analize uticaja kosog dostrujavanje vode na agregate HE Đerdap 2, projektovan je sistem za merenje brzine vode, i posredno protoka, sa elektromagnetnim (EM) sondama koje mogu istovremeno da mere sve tri komponente brzina (3D). Merni sistem se sadrži 15 3D EM sondi postavljenih horizontalno na čelični ram širine 14,5 m, koji se kontinualno, ili postepeno, podiže celom visinom proticajnog preseka (27 m). Tokom konstruisanja 3D EM sondi, na kanalu Instituta IJČ su rađena detaljna ispitivanja, kao i finalna kalibracija prostorne osetljivosti. U sklopu kalibracije samih sondi, ispitivan je i uticaj nosećeg rama na merenja. Kako je ram za terenske potrebe prevelik, izrađen je parcijalni model rama u razmeri 1:1 sa kojim su izvršena ispitivanja u IJČ kanalu. Sva merenja su sinhronizovana sa mernim sistemom po MODBUS protokolu. Merena je referentna brzina kolica preko enkodera sa točkom na tvrdoj podlozi i pokazivanje brzina 3D EM sondi. Ispitani su različiti napadni uglovi, gde je položaj sonde postavljen preko mehaničkog graničnika. U ovom radu je predstavljena procedura i detaljno su opisani postupci kalibracije i dodatnih ispitivanja 3D EM sondi sa modelom rama. Takođe, kako je kalibrisano 20 3D EM sondi, prikazani su rezultati testova i performanse istih pri različitim napadnim uglovima.
PB  - Društvo Metrologa
C3  - Kongres metrologa 2022
T1  - Kalibracija 3D elektromagnetnih merila brzine vode
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2829
ER  - 

@conference{
author = "Vojt, Predrag and Prodanović, Dušan and Ivetić, Damjan",
year = "2022",
abstract = "Druga najvažnija veličina u hidrotehničkoj praksi je protok vode i sa njom direktno povezana brzina vode (prva je, svakako, nivo/dubina odnosno, pritisak vode). Brzina vode se uglavnom meri posredno, korišćenjem nekog od odgovarajućih pretvarača, koje treba redovno kalibrisati. U sklopu hidrauličke laboratorije Instituta za vodoprivredu „Jaroslav Černi“ (IJČ) nalazi se 120 m dug kanal za kalibrisanje sondi za merenje brzine vode apsolutnom metodom, prema ISO 3445 standardu: kroz vodu koja miruje se zadatom brzinom vozi sonda, a brzina se određuje preko pređenog puta u jedinici vremena. Za potrebe analize uticaja kosog dostrujavanje vode na agregate HE Đerdap 2, projektovan je sistem za merenje brzine vode, i posredno protoka, sa elektromagnetnim (EM) sondama koje mogu istovremeno da mere sve tri komponente brzina (3D). Merni sistem se sadrži 15 3D EM sondi postavljenih horizontalno na čelični ram širine 14,5 m, koji se kontinualno, ili postepeno, podiže celom visinom proticajnog preseka (27 m). Tokom konstruisanja 3D EM sondi, na kanalu Instituta IJČ su rađena detaljna ispitivanja, kao i finalna kalibracija prostorne osetljivosti. U sklopu kalibracije samih sondi, ispitivan je i uticaj nosećeg rama na merenja. Kako je ram za terenske potrebe prevelik, izrađen je parcijalni model rama u razmeri 1:1 sa kojim su izvršena ispitivanja u IJČ kanalu. Sva merenja su sinhronizovana sa mernim sistemom po MODBUS protokolu. Merena je referentna brzina kolica preko enkodera sa točkom na tvrdoj podlozi i pokazivanje brzina 3D EM sondi. Ispitani su različiti napadni uglovi, gde je položaj sonde postavljen preko mehaničkog graničnika. U ovom radu je predstavljena procedura i detaljno su opisani postupci kalibracije i dodatnih ispitivanja 3D EM sondi sa modelom rama. Takođe, kako je kalibrisano 20 3D EM sondi, prikazani su rezultati testova i performanse istih pri različitim napadnim uglovima.",
publisher = "Društvo Metrologa",
journal = "Kongres metrologa 2022",
title = "Kalibracija 3D elektromagnetnih merila brzine vode",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2829"
}

Vojt, P., Prodanović, D.,& Ivetić, D.. (2022). Kalibracija 3D elektromagnetnih merila brzine vode. in Kongres metrologa 2022
Društvo Metrologa..
https://hdl.handle.net/21.15107/rcub_grafar_2829

Vojt P, Prodanović D, Ivetić D. Kalibracija 3D elektromagnetnih merila brzine vode. in Kongres metrologa 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_grafar_2829 .

Vojt, Predrag, Prodanović, Dušan, Ivetić, Damjan, "Kalibracija 3D elektromagnetnih merila brzine vode" in Kongres metrologa 2022 (2022),
https://hdl.handle.net/21.15107/rcub_grafar_2829 .

Prodanović, D., Ivetić, D., Milivojević, N., Vojt, P.,& Cvitkovac, M.. (2021). Sistem za merenje protoka na ulazima u cevne turbine na bazi elektromagnetnih senzora brzine. in Investitor: Elektroprivreda Srbije.
https://hdl.handle.net/21.15107/rcub_grafar_3319

Prodanović D, Ivetić D, Milivojević N, Vojt P, Cvitkovac M. Sistem za merenje protoka na ulazima u cevne turbine na bazi elektromagnetnih senzora brzine. in Investitor: Elektroprivreda Srbije. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_3319 .

Prodanović, Dušan, Ivetić, Damjan, Milivojević, Nikola, Vojt, Predrag, Cvitkovac, Mile, "Sistem za merenje protoka na ulazima u cevne turbine na bazi elektromagnetnih senzora brzine" in Investitor: Elektroprivreda Srbije (2021),
https://hdl.handle.net/21.15107/rcub_grafar_3319 .

TY  - CONF
AU  - Vojt, Predrag
AU  - Ivetić, Damjan
AU  - Bićanić, Davor
AU  - Prodanović, Dušan
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2495
AB  - Pregled stanja monitoringa u kanalizaciji Srbije, sa datim uvodnim objašnjenjima, osnovno o tome šta je monitoring i zašto se radi u sistemu kanalizacije, o kontinualnom monitoringu i privremenom monitoringu, pregled gde su autori sve izvršili monitoring sa objašnjenjem koje su sve metode merenja korišćene. Prikaz osnovnih rezultata monitoringa i statistički pokazatelji.
PB  - Udruženje za tehnologiju vode i sanitarno inženjerstvo
C3  - 20 konferencija - Vodovodni i kanalizacioni sistemi
T1  - Pregled stanja monitoringa u kanalizaciji Srbije
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2495
ER  - 

@conference{
author = "Vojt, Predrag and Ivetić, Damjan and Bićanić, Davor and Prodanović, Dušan",
year = "2021",
abstract = "Pregled stanja monitoringa u kanalizaciji Srbije, sa datim uvodnim objašnjenjima, osnovno o tome šta je monitoring i zašto se radi u sistemu kanalizacije, o kontinualnom monitoringu i privremenom monitoringu, pregled gde su autori sve izvršili monitoring sa objašnjenjem koje su sve metode merenja korišćene. Prikaz osnovnih rezultata monitoringa i statistički pokazatelji.",
publisher = "Udruženje za tehnologiju vode i sanitarno inženjerstvo",
journal = "20 konferencija - Vodovodni i kanalizacioni sistemi",
title = "Pregled stanja monitoringa u kanalizaciji Srbije",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2495"
}

Vojt, P., Ivetić, D., Bićanić, D.,& Prodanović, D.. (2021). Pregled stanja monitoringa u kanalizaciji Srbije. in 20 konferencija - Vodovodni i kanalizacioni sistemi
Udruženje za tehnologiju vode i sanitarno inženjerstvo..
https://hdl.handle.net/21.15107/rcub_grafar_2495

Vojt P, Ivetić D, Bićanić D, Prodanović D. Pregled stanja monitoringa u kanalizaciji Srbije. in 20 konferencija - Vodovodni i kanalizacioni sistemi. 2021;.
https://hdl.handle.net/21.15107/rcub_grafar_2495 .

Vojt, Predrag, Ivetić, Damjan, Bićanić, Davor, Prodanović, Dušan, "Pregled stanja monitoringa u kanalizaciji Srbije" in 20 konferencija - Vodovodni i kanalizacioni sistemi (2021),
https://hdl.handle.net/21.15107/rcub_grafar_2495 .

TY  - JOUR
AU  - Prodanović, Dušan
AU  - Milivojević, Nikola
AU  - Ivetić, Damjan
AU  - Vojt, Predrag
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2498
AB  - Protok vode kroz turbinu je jedna od najznačajnijih veličina u postupku upravljanja radom agregata, ali je istovremeno i veličina koju je najteže pouzdano izmeriti. Merna nesigurnost je obično veća nego kod merenja ostalih osnovnih veličina, pritiska i dubine vode, otvorenosti sprovodnog kola turbine ili električnih parametara. U okviru analize uticaja kosog dostrujavanje i plana revitalizacije cevnih agregata na HE Đerdap 2, a sa ciljem bolje procene hidrauličke efikasnosti turbina, projektovan je i primenjen inovativni sistem za posredno merenje protoka. Merni sistem se koristi za određivanje protoka primenom metode Brzina – Proticajni presek i postavlja se na ulazu u turbinu, uzvodno od grube rešetke. Okosnicu sistema čini 15 elektromagnetnih (EM) senzora za merenje sve tri komponente brzina, horizontalno postavljenih na čelični ram koji se proteže celom širinom proticajnog preseka. Ram se podiže po celoj visini proticajnog preseka kako bi se uz pomoć EM senzora i dva redudantna akustična Dopler senzora, mapiralo celokupno polje brzina. Položaj rama se prati pomoću dva enkodera, dok se dva senzora pritiska koriste za merenje dubine vode. Merenja su sinhronizovana sa lokalnim SCADA sistemom, tako da se u post procesiranju, u konačnom obračunu protoka, koriste i odgovarajući podaci o radu turbine. Merni sistem je korišćen u dva režima rada: inkrementalnom, sporijem ali veće tačnosti i u kontinualnom režimu. Imajući u vidu specifičnosti ova dva režima snimanja polja brzina, samog mernog sistema sa novorazvijenim EM senzorima, kao i hidrauličkih uslova, razvijena je adekvatna procedura za procenu nesigurnosti izmerenog protoka. U ovom radu je prikazana merna metoda i data su neka zapažanja sa obavljenih merenja na agregatima HE „Đerdap 2“.
PB  - Srpsko društvo za odvodnjavanje i navodnjavanje i Akademija inženjerskih nauka Srbije
T2  - Vodoprivreda
T1  - Metoda za odredjivanje protoka na ulazu u turbine HE "Djerdap 2"
EP  - 24
IS  - 309-310
SP  - 11
VL  - 53
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2498
ER  - 

@article{
author = "Prodanović, Dušan and Milivojević, Nikola and Ivetić, Damjan and Vojt, Predrag",
year = "2021",
abstract = "Protok vode kroz turbinu je jedna od najznačajnijih veličina u postupku upravljanja radom agregata, ali je istovremeno i veličina koju je najteže pouzdano izmeriti. Merna nesigurnost je obično veća nego kod merenja ostalih osnovnih veličina, pritiska i dubine vode, otvorenosti sprovodnog kola turbine ili električnih parametara. U okviru analize uticaja kosog dostrujavanje i plana revitalizacije cevnih agregata na HE Đerdap 2, a sa ciljem bolje procene hidrauličke efikasnosti turbina, projektovan je i primenjen inovativni sistem za posredno merenje protoka. Merni sistem se koristi za određivanje protoka primenom metode Brzina – Proticajni presek i postavlja se na ulazu u turbinu, uzvodno od grube rešetke. Okosnicu sistema čini 15 elektromagnetnih (EM) senzora za merenje sve tri komponente brzina, horizontalno postavljenih na čelični ram koji se proteže celom širinom proticajnog preseka. Ram se podiže po celoj visini proticajnog preseka kako bi se uz pomoć EM senzora i dva redudantna akustična Dopler senzora, mapiralo celokupno polje brzina. Položaj rama se prati pomoću dva enkodera, dok se dva senzora pritiska koriste za merenje dubine vode. Merenja su sinhronizovana sa lokalnim SCADA sistemom, tako da se u post procesiranju, u konačnom obračunu protoka, koriste i odgovarajući podaci o radu turbine. Merni sistem je korišćen u dva režima rada: inkrementalnom, sporijem ali veće tačnosti i u kontinualnom režimu. Imajući u vidu specifičnosti ova dva režima snimanja polja brzina, samog mernog sistema sa novorazvijenim EM senzorima, kao i hidrauličkih uslova, razvijena je adekvatna procedura za procenu nesigurnosti izmerenog protoka. U ovom radu je prikazana merna metoda i data su neka zapažanja sa obavljenih merenja na agregatima HE „Đerdap 2“.",
publisher = "Srpsko društvo za odvodnjavanje i navodnjavanje i Akademija inženjerskih nauka Srbije",
journal = "Vodoprivreda",
title = "Metoda za odredjivanje protoka na ulazu u turbine HE "Djerdap 2"",
pages = "24-11",
number = "309-310",
volume = "53",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2498"
}

Prodanović, D., Milivojević, N., Ivetić, D.,& Vojt, P.. (2021). Metoda za odredjivanje protoka na ulazu u turbine HE "Djerdap 2". in Vodoprivreda
Srpsko društvo za odvodnjavanje i navodnjavanje i Akademija inženjerskih nauka Srbije., 53(309-310), 11-24.
https://hdl.handle.net/21.15107/rcub_grafar_2498

Prodanović D, Milivojević N, Ivetić D, Vojt P. Metoda za odredjivanje protoka na ulazu u turbine HE "Djerdap 2". in Vodoprivreda. 2021;53(309-310):11-24.
https://hdl.handle.net/21.15107/rcub_grafar_2498 .

Prodanović, Dušan, Milivojević, Nikola, Ivetić, Damjan, Vojt, Predrag, "Metoda za odredjivanje protoka na ulazu u turbine HE "Djerdap 2"" in Vodoprivreda, 53, no. 309-310 (2021):11-24,
https://hdl.handle.net/21.15107/rcub_grafar_2498 .

TY  - CONF
AU  - Prodanović, Dušan
AU  - Ivetić, Damjan
AU  - Vojt, Predrag
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2497
AB  - Određivanje hidrauličke efikasnosti turbina se zasniva na pouzdanom poznavanju nekoliko osnovnih hidrauličkih, mašinskih i elektro veličina. Iz ove grupe, protok vode kroz turbinu je veličina koju je najteže pouzdano izmeriti. Merna nesigurnost je uobičajeno veća nego kod merenja ostalih osnovnih veličina. Pored toga, i sama procedura određivanja merne nesigurnosti je složenija, prvenstveno usled kompleksnosti samog mernog procesa ali i zbog specifičnosti hidrauličkih uslova na mernim mestima. U okviru analize uticaja kosog dostrujavanje i plana revitalizacije cevnih agregata na HE Đerdap 2, a sa ciljem bolje procene hidrauličke efikasnosti turbina, projektovan je i primenjen inovativni sistem za posredno merenje protoka. Merni sistem se koristi za određivanje protoka primenom metode Brzina – Proticajni presek i može se postaviti na ulazu u turbinu, uzvodno od grube rešetke. Okosnicu sistema čini 15 elektromagnetnih senzora sve tri komponente brzina, horizontalno postavljenih na čelični ram koji se proteže celom širinom proticajnog preseka. Ram se podiže po celoj visini proticajnog preseka kako bi se uz pomoć EM senzora i dva redudantna akustična Dopler senzora, mapiralo celo polje brzina. Položaj rama se prati pomoću dva enkodera, dok se dva senzora pritiska koriste za merenje dubine vode. Merenja su sinhronizovana sa lokalnim SCADA sistemom, tako da se u post procesiranju – odnosno u konačnoj proceni protoka, koriste i odgovarajući podaci o radu turbine. Merni sistem je korišćen u dva režima rada: inkrementalnom, sporijem ali veće tačnosti i kontinualnom. Imajući u vidu specifičnosti ova dva režima snimanja polja brzina, samog mernog sistema sa novorazvijenim EM senzorima, kao i hidrauličkih uslova, razvijena je adekvatna procedura za procenu nesigurnosti izmerenog protoka. U ovom radu je prikazana merna metoda i dati su neki rezultati merenja na agregatima HE „Đerdap 2“.
PB  - Univerzitet u Beogradu – Građevinski fakultet, Beograd
C3  - Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
T1  - Odredjivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Prikaz merne metode
EP  - 239
SP  - 222
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2497
ER  - 

@conference{
author = "Prodanović, Dušan and Ivetić, Damjan and Vojt, Predrag",
year = "2021",
abstract = "Određivanje hidrauličke efikasnosti turbina se zasniva na pouzdanom poznavanju nekoliko osnovnih hidrauličkih, mašinskih i elektro veličina. Iz ove grupe, protok vode kroz turbinu je veličina koju je najteže pouzdano izmeriti. Merna nesigurnost je uobičajeno veća nego kod merenja ostalih osnovnih veličina. Pored toga, i sama procedura određivanja merne nesigurnosti je složenija, prvenstveno usled kompleksnosti samog mernog procesa ali i zbog specifičnosti hidrauličkih uslova na mernim mestima. U okviru analize uticaja kosog dostrujavanje i plana revitalizacije cevnih agregata na HE Đerdap 2, a sa ciljem bolje procene hidrauličke efikasnosti turbina, projektovan je i primenjen inovativni sistem za posredno merenje protoka. Merni sistem se koristi za određivanje protoka primenom metode Brzina – Proticajni presek i može se postaviti na ulazu u turbinu, uzvodno od grube rešetke. Okosnicu sistema čini 15 elektromagnetnih senzora sve tri komponente brzina, horizontalno postavljenih na čelični ram koji se proteže celom širinom proticajnog preseka. Ram se podiže po celoj visini proticajnog preseka kako bi se uz pomoć EM senzora i dva redudantna akustična Dopler senzora, mapiralo celo polje brzina. Položaj rama se prati pomoću dva enkodera, dok se dva senzora pritiska koriste za merenje dubine vode. Merenja su sinhronizovana sa lokalnim SCADA sistemom, tako da se u post procesiranju – odnosno u konačnoj proceni protoka, koriste i odgovarajući podaci o radu turbine. Merni sistem je korišćen u dva režima rada: inkrementalnom, sporijem ali veće tačnosti i kontinualnom. Imajući u vidu specifičnosti ova dva režima snimanja polja brzina, samog mernog sistema sa novorazvijenim EM senzorima, kao i hidrauličkih uslova, razvijena je adekvatna procedura za procenu nesigurnosti izmerenog protoka. U ovom radu je prikazana merna metoda i dati su neki rezultati merenja na agregatima HE „Đerdap 2“.",
publisher = "Univerzitet u Beogradu – Građevinski fakultet, Beograd",
journal = "Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju",
title = "Odredjivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Prikaz merne metode",
pages = "239-222",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2497"
}

Prodanović, D., Ivetić, D.,& Vojt, P.. (2021). Odredjivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Prikaz merne metode. in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
Univerzitet u Beogradu – Građevinski fakultet, Beograd., 222-239.
https://hdl.handle.net/21.15107/rcub_grafar_2497

Prodanović D, Ivetić D, Vojt P. Odredjivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Prikaz merne metode. in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju. 2021;:222-239.
https://hdl.handle.net/21.15107/rcub_grafar_2497 .

Prodanović, Dušan, Ivetić, Damjan, Vojt, Predrag, "Odredjivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Prikaz merne metode" in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju (2021):222-239,
https://hdl.handle.net/21.15107/rcub_grafar_2497 .

TY  - CONF
AU  - Ivetić, Damjan
AU  - Prodanović, Dušan
AU  - Vojt, Predrag
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2513
AB  - To quantify the hydraulic performance characteristics of hydraulic turbines several basic quantities need to be accurately determined. Discharge, or flow rate, is the most difficult quantity to measure as the measurement uncertainty is higher and more difficult to estimate in comparison to the power and head. Design of a discharge measurement system is governed by both the geometric and flow conditions at the measurement site, as well as by the physical properties of the fluid. Moreover, in adverse or non-standard flow conditions, special care must be taken to allow for the measurement system to capture the discharge data with acceptably low measurement uncertainty. In this paper, a general description of a novel discharge measurement system, designed and installed at the Iron Gate 2 hydropower plant, is provided. The system can be installed at the turbine intake, upstream of the trash rack, on one turbine at the time. Discharge value is acquired by employing a Velocity-Area aproach. Robust steel frame, carrying 15 novel 3D electromagnetic velocity probes, along with the 2 acoustic doppler velocimeters, is traversed along the cross sectional flow area allowing for accurate velocity field mapping. Position of the traversing frame is determined with two position transducers while two pressure transducers are used for the water level measurements. The measurement system was used at two turbines at the Iron Gate 2 HPP, capturing discharge with low measurement uncertainties.
PB  - Univerzitet u Novom Sadu, Građevinski fakultet Subotica
C3  - Univerzitet u Novom Sadu, Građevinski fakultet Subotica
T1  - Novel discharge measurement system at the turbine intakes of Iron Gate 2 hydropower plant: a system description
T1  - Иновативни систем за мерење протока на улазима у турбине хидроелектране Ђердап 2: опис система
DO  - 10.14415/konferencijaGFS2021.43
ER  - 

@conference{
author = "Ivetić, Damjan and Prodanović, Dušan and Vojt, Predrag",
year = "2021",
abstract = "To quantify the hydraulic performance characteristics of hydraulic turbines several basic quantities need to be accurately determined. Discharge, or flow rate, is the most difficult quantity to measure as the measurement uncertainty is higher and more difficult to estimate in comparison to the power and head. Design of a discharge measurement system is governed by both the geometric and flow conditions at the measurement site, as well as by the physical properties of the fluid. Moreover, in adverse or non-standard flow conditions, special care must be taken to allow for the measurement system to capture the discharge data with acceptably low measurement uncertainty. In this paper, a general description of a novel discharge measurement system, designed and installed at the Iron Gate 2 hydropower plant, is provided. The system can be installed at the turbine intake, upstream of the trash rack, on one turbine at the time. Discharge value is acquired by employing a Velocity-Area aproach. Robust steel frame, carrying 15 novel 3D electromagnetic velocity probes, along with the 2 acoustic doppler velocimeters, is traversed along the cross sectional flow area allowing for accurate velocity field mapping. Position of the traversing frame is determined with two position transducers while two pressure transducers are used for the water level measurements. The measurement system was used at two turbines at the Iron Gate 2 HPP, capturing discharge with low measurement uncertainties.",
publisher = "Univerzitet u Novom Sadu, Građevinski fakultet Subotica",
journal = "Univerzitet u Novom Sadu, Građevinski fakultet Subotica",
title = "Novel discharge measurement system at the turbine intakes of Iron Gate 2 hydropower plant: a system description, Иновативни систем за мерење протока на улазима у турбине хидроелектране Ђердап 2: опис система",
doi = "10.14415/konferencijaGFS2021.43"
}

Ivetić, D., Prodanović, D.,& Vojt, P.. (2021). Novel discharge measurement system at the turbine intakes of Iron Gate 2 hydropower plant: a system description. in Univerzitet u Novom Sadu, Građevinski fakultet Subotica
Univerzitet u Novom Sadu, Građevinski fakultet Subotica..
https://doi.org/10.14415/konferencijaGFS2021.43

Ivetić D, Prodanović D, Vojt P. Novel discharge measurement system at the turbine intakes of Iron Gate 2 hydropower plant: a system description. in Univerzitet u Novom Sadu, Građevinski fakultet Subotica. 2021;.
doi:10.14415/konferencijaGFS2021.43 .

Ivetić, Damjan, Prodanović, Dušan, Vojt, Predrag, "Novel discharge measurement system at the turbine intakes of Iron Gate 2 hydropower plant: a system description" in Univerzitet u Novom Sadu, Građevinski fakultet Subotica (2021),
https://doi.org/10.14415/konferencijaGFS2021.43 . .

TY  - CONF
AU  - Ivetić, Damjan
AU  - Prodanović, Dušan
AU  - Vojt, Predrag
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2512
AB  - Određivanje hidrauličke efikasnosti turbina se zasniva na pouzdanom poznavanju nekoliko osnovnih hidrauličkih, mašinskih i elektro veličina. Iz ove grupe, protok vode kroz turbinu je veličina koju je najteže pouzdano izmeriti. Merna nesigurnost je uobičajeno veća nego kod merenja ostalih osnovnih veličina. Pored toga, i sama procedura određivanja merne nesigurnosti je složenija, prvenstveno usled kompleksnosti samog mernog procesa ali i zbog specifičnosti hidrauličkih uslova na mernim mestima. U okviru plana revitalizacije cevnih agregata na HE Đerdap 2, sa ciljem bolje procene hidrauličke efikasnosti turbina, projektovan je i primenjen inovativni sistem za posredno merenje protoka. Merni sistem koristi metodu Brzina – Proticajni presek i može se postaviti na ulazu u turbinu, uzvodno od grube rešetke. Pomoću 15 komada 3D elektromagnetnih senzora brzine, horizontalno postavljenih na čelični ram, koji se podiže po celoj visini proticajnog preseka, snima se polje brzina. Pored EM senzora, na ram su postavljena i dva redudantna akustična Dopler senzora, merači položaja rama i dubine vode. Sva merenja su sinhronizovana sa lokalnim SCADA sistemom, tako da se u konačnom obračunu protoka, koriste i odgovarajući podaci o radu turbine. Imajući u vidu specifičnosti dva moguća režima rada tokom merenja (inkrementalni i kontinualni), samog mernog sistema sa novorazvijenim EM senzorima, kao i hidrauličkih uslova (koso dostrujavanje), razvijena je posebna procedura za procenu nesigurnosti izmerenog protoka. Analizirani su doprinosi svih uticajnih veličina na samo merenje kao i na postupak interpolacije u toku obračuna protoka. U ovom radu je predstavljena navedena procedura i detaljno su opisane komponente merne nesigurnosti koje utiču na konačnu nesigurnost izmerenog protoka. Takođe, prikazani su rezultati primene na delu dosadašnjih merenja na agregatima HE Đerdap 2.
AB  - The assessment of the turbine hydraulic efficiency is based upon the reliable information on several hydraulic, mechanical and electric quantities. Out of these, discharge, or the flow rate, is the quantity which is most difficult to accurately measure. Measurement uncertainty is typically higher than in rest of the cases. Furthermore, the procedure for the measurement uncertainty assessment is more complex, mainly due to the complexity of the measurement process and the specific flow conditions at the measurement site. As a part of the tubular turbine revitalization plans for the HPP Iron Gate 2, with a goal of improved assessment of the turbine hydraulic efficiency, a novel discharge measurement system was designed and applied. The system is using the Velocity – Area approach for the discharge measurements, and can be installed at the turbine intakes, upstream of the trash rack. The core of the measurement system are 15 novel 3D electromagnetic velocity meters, mounted on steel frame spanning across the width of the flow area. The steel frame is traversed across the height of the flow area to allow for the velocity field mapping using the EM sensors and 2 redundant acoustic Doppler velocimeters. The position of the frame is monitored via 2 position transducers, while 2 pressure transducers are used for the water depth measurements. The measurements are synchronized with local SCADA system, thus in the post processing – and in the final discharge evaluation, additional turbine data are used. Two operating modes of the system can be used: incremental and continuous. Due to the specifics of the operating modes, actual measurement system with novel EM sensors, and hydraulic conditions, a detailed measurement uncertainty assessment was performed. Contributions from each uncertainty component and the procedure for the interpolation of the measured velocities, on the measurement results, are incorporated. In this paper, the above-mentioned procedure is presented, while the components of the final discharge measurement uncertainty are described in detail. Additionally, the results of the procedure application on the conducted measurements, are shown.
PB  - Univerzitet u Beogradu – Građevinski fakultet, Beograd
C3  - Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
T1  - Određivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Određivanje nesigurnosti izmerenog protoka
T1  - Discharge measurements at the tubular turbine intakes with EM current meters: Assessment of the discharge measurement uncertainty
EP  - 254
SP  - 240
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2512
ER  - 

@conference{
author = "Ivetić, Damjan and Prodanović, Dušan and Vojt, Predrag",
year = "2021",
abstract = "Određivanje hidrauličke efikasnosti turbina se zasniva na pouzdanom poznavanju nekoliko osnovnih hidrauličkih, mašinskih i elektro veličina. Iz ove grupe, protok vode kroz turbinu je veličina koju je najteže pouzdano izmeriti. Merna nesigurnost je uobičajeno veća nego kod merenja ostalih osnovnih veličina. Pored toga, i sama procedura određivanja merne nesigurnosti je složenija, prvenstveno usled kompleksnosti samog mernog procesa ali i zbog specifičnosti hidrauličkih uslova na mernim mestima. U okviru plana revitalizacije cevnih agregata na HE Đerdap 2, sa ciljem bolje procene hidrauličke efikasnosti turbina, projektovan je i primenjen inovativni sistem za posredno merenje protoka. Merni sistem koristi metodu Brzina – Proticajni presek i može se postaviti na ulazu u turbinu, uzvodno od grube rešetke. Pomoću 15 komada 3D elektromagnetnih senzora brzine, horizontalno postavljenih na čelični ram, koji se podiže po celoj visini proticajnog preseka, snima se polje brzina. Pored EM senzora, na ram su postavljena i dva redudantna akustična Dopler senzora, merači položaja rama i dubine vode. Sva merenja su sinhronizovana sa lokalnim SCADA sistemom, tako da se u konačnom obračunu protoka, koriste i odgovarajući podaci o radu turbine. Imajući u vidu specifičnosti dva moguća režima rada tokom merenja (inkrementalni i kontinualni), samog mernog sistema sa novorazvijenim EM senzorima, kao i hidrauličkih uslova (koso dostrujavanje), razvijena je posebna procedura za procenu nesigurnosti izmerenog protoka. Analizirani su doprinosi svih uticajnih veličina na samo merenje kao i na postupak interpolacije u toku obračuna protoka. U ovom radu je predstavljena navedena procedura i detaljno su opisane komponente merne nesigurnosti koje utiču na konačnu nesigurnost izmerenog protoka. Takođe, prikazani su rezultati primene na delu dosadašnjih merenja na agregatima HE Đerdap 2., The assessment of the turbine hydraulic efficiency is based upon the reliable information on several hydraulic, mechanical and electric quantities. Out of these, discharge, or the flow rate, is the quantity which is most difficult to accurately measure. Measurement uncertainty is typically higher than in rest of the cases. Furthermore, the procedure for the measurement uncertainty assessment is more complex, mainly due to the complexity of the measurement process and the specific flow conditions at the measurement site. As a part of the tubular turbine revitalization plans for the HPP Iron Gate 2, with a goal of improved assessment of the turbine hydraulic efficiency, a novel discharge measurement system was designed and applied. The system is using the Velocity – Area approach for the discharge measurements, and can be installed at the turbine intakes, upstream of the trash rack. The core of the measurement system are 15 novel 3D electromagnetic velocity meters, mounted on steel frame spanning across the width of the flow area. The steel frame is traversed across the height of the flow area to allow for the velocity field mapping using the EM sensors and 2 redundant acoustic Doppler velocimeters. The position of the frame is monitored via 2 position transducers, while 2 pressure transducers are used for the water depth measurements. The measurements are synchronized with local SCADA system, thus in the post processing – and in the final discharge evaluation, additional turbine data are used. Two operating modes of the system can be used: incremental and continuous. Due to the specifics of the operating modes, actual measurement system with novel EM sensors, and hydraulic conditions, a detailed measurement uncertainty assessment was performed. Contributions from each uncertainty component and the procedure for the interpolation of the measured velocities, on the measurement results, are incorporated. In this paper, the above-mentioned procedure is presented, while the components of the final discharge measurement uncertainty are described in detail. Additionally, the results of the procedure application on the conducted measurements, are shown.",
publisher = "Univerzitet u Beogradu – Građevinski fakultet, Beograd",
journal = "Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju",
title = "Određivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Određivanje nesigurnosti izmerenog protoka, Discharge measurements at the tubular turbine intakes with EM current meters: Assessment of the discharge measurement uncertainty",
pages = "254-240",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2512"
}

Ivetić, D., Prodanović, D.,& Vojt, P.. (2021). Određivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Određivanje nesigurnosti izmerenog protoka. in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
Univerzitet u Beogradu – Građevinski fakultet, Beograd., 240-254.
https://hdl.handle.net/21.15107/rcub_grafar_2512

Ivetić D, Prodanović D, Vojt P. Određivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Određivanje nesigurnosti izmerenog protoka. in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju. 2021;:240-254.
https://hdl.handle.net/21.15107/rcub_grafar_2512 .

Ivetić, Damjan, Prodanović, Dušan, Vojt, Predrag, "Određivanje protoka na prilazima cevnih turbina uz pomoć EM senzora brzine: Određivanje nesigurnosti izmerenog protoka" in Zbornik radova 19. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju (2021):240-254,
https://hdl.handle.net/21.15107/rcub_grafar_2512 .

TY  - CONF
AU  - Ivetić, Damjan
AU  - Prodanović, Dušan
AU  - Vojt, Predrag
PY  - 2021
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2514
AB  - To define the performance characteristics of turbines in Hydropower Plants (HPP) accurate hydraulic, mechanical and electrical quantities are needed. The discharge is the most difficult quantity to measure and assess its uncertainty (Adamkowski, 2012). Traditionally, during field acceptance tests the discharge is measured using velocity-area method. Often, no direct flow measurements are possible and only index methods are used, with flow coefficients obtained during physical model testing. In the non-standard situations, with adverse flow conditions this may lead to unpredicted flow uncertainty. 
	The system used at the Iron Gate 2 HPP for control flow measurement at the inlet of bulb turbine is presented in this paper. The HPP is situated on a Danube river, between Serbia and Romania and is operational from 1985. The HPP is equipped with 20 horizontal Kaplan low head bulb turbines. The physical model experiments (JČInstitute, 2006) have concluded that due to the upstream flow conditions, the incident water flow direction is not parallel to the turbines (depending on operating conditions and can be up to 40o) as was assumed during the turbine’s model tests, raising the question of used Winter-Kennedy’s method accuracy.
	To perform a control flow measurement, a modular velocity-area system was designed. The system can be installed at the intake of any turbine, upstream of the trash rack. It consists of the 14.5x3.1 m steel frame, shaped to minimize flow disturbances, which can be traversed vertically through the flow cross section (28 m). Due to the high incident angles and large vortices in the front of the trash rack, propeller current meters were not suitable. The novel spherical 3D electromagnetic velocity meter (EMVM) was developed (Svet Instrumenata), enabling fast and continuous measurements of all the velocity vector components, with low flow disturbance. The 15 EMVMs were mounted on the frame and connected into the measurement network. Redundant velocity measurement was done using 2 Nortek “Vector” ADVs (Nortek). The measurement network also comprises of 2 water level pressure transducers and 2 steel frame position transducers (UniMeasure). All measurements were synchronized with HPP’s SCADA, so turbine’s operational parameters were downloaded off-line and merged.
	During the 2020, measurement system was used on the two turbines. The velocity profile was measured using two strategies: incrementally, the steel frame was raised from the bottom (average depth of 26 m) in increments of ~1.0 m and kept for at least 10 min in fixed position, and continuous where the steel frame was traversed through the flow cross-section with a constant speed of 0.05 m/s. Uncertainty assessment procedure, specifically tailored for this application, yielded discharge measurement uncertainties between 1.02 % and 2.00 %  for incremental, and between 1.65 % to 2.79 % for continuous regime.
PB  - European Geosciences Union/Copernicus Publications
C3  - European Geosciences Union
T1  - Velocity field and discharge measurements at the turbine inlet of Iron Gate 2 hydropower plant
DO  - 10.5194/egusphere-egu21-8380
ER  - 

@conference{
author = "Ivetić, Damjan and Prodanović, Dušan and Vojt, Predrag",
year = "2021",
abstract = "To define the performance characteristics of turbines in Hydropower Plants (HPP) accurate hydraulic, mechanical and electrical quantities are needed. The discharge is the most difficult quantity to measure and assess its uncertainty (Adamkowski, 2012). Traditionally, during field acceptance tests the discharge is measured using velocity-area method. Often, no direct flow measurements are possible and only index methods are used, with flow coefficients obtained during physical model testing. In the non-standard situations, with adverse flow conditions this may lead to unpredicted flow uncertainty. 
	The system used at the Iron Gate 2 HPP for control flow measurement at the inlet of bulb turbine is presented in this paper. The HPP is situated on a Danube river, between Serbia and Romania and is operational from 1985. The HPP is equipped with 20 horizontal Kaplan low head bulb turbines. The physical model experiments (JČInstitute, 2006) have concluded that due to the upstream flow conditions, the incident water flow direction is not parallel to the turbines (depending on operating conditions and can be up to 40o) as was assumed during the turbine’s model tests, raising the question of used Winter-Kennedy’s method accuracy.
	To perform a control flow measurement, a modular velocity-area system was designed. The system can be installed at the intake of any turbine, upstream of the trash rack. It consists of the 14.5x3.1 m steel frame, shaped to minimize flow disturbances, which can be traversed vertically through the flow cross section (28 m). Due to the high incident angles and large vortices in the front of the trash rack, propeller current meters were not suitable. The novel spherical 3D electromagnetic velocity meter (EMVM) was developed (Svet Instrumenata), enabling fast and continuous measurements of all the velocity vector components, with low flow disturbance. The 15 EMVMs were mounted on the frame and connected into the measurement network. Redundant velocity measurement was done using 2 Nortek “Vector” ADVs (Nortek). The measurement network also comprises of 2 water level pressure transducers and 2 steel frame position transducers (UniMeasure). All measurements were synchronized with HPP’s SCADA, so turbine’s operational parameters were downloaded off-line and merged.
	During the 2020, measurement system was used on the two turbines. The velocity profile was measured using two strategies: incrementally, the steel frame was raised from the bottom (average depth of 26 m) in increments of ~1.0 m and kept for at least 10 min in fixed position, and continuous where the steel frame was traversed through the flow cross-section with a constant speed of 0.05 m/s. Uncertainty assessment procedure, specifically tailored for this application, yielded discharge measurement uncertainties between 1.02 % and 2.00 %  for incremental, and between 1.65 % to 2.79 % for continuous regime.",
publisher = "European Geosciences Union/Copernicus Publications",
journal = "European Geosciences Union",
title = "Velocity field and discharge measurements at the turbine inlet of Iron Gate 2 hydropower plant",
doi = "10.5194/egusphere-egu21-8380"
}

Ivetić, D., Prodanović, D.,& Vojt, P.. (2021). Velocity field and discharge measurements at the turbine inlet of Iron Gate 2 hydropower plant. in European Geosciences Union
European Geosciences Union/Copernicus Publications..
https://doi.org/10.5194/egusphere-egu21-8380

Ivetić D, Prodanović D, Vojt P. Velocity field and discharge measurements at the turbine inlet of Iron Gate 2 hydropower plant. in European Geosciences Union. 2021;.
doi:10.5194/egusphere-egu21-8380 .

Ivetić, Damjan, Prodanović, Dušan, Vojt, Predrag, "Velocity field and discharge measurements at the turbine inlet of Iron Gate 2 hydropower plant" in European Geosciences Union (2021),
https://doi.org/10.5194/egusphere-egu21-8380 . .

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  - CONF
AU  - Vojt, Predrag
AU  - Pavlović, Dragutin
AU  - Prodanović, Dušan
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1649
AB  - Data  regarding  the  quantity  and  the  intensity  of  rainfall  is  needed  for  the  purposes  of  the  hydrotechnical  practice.  The  Republic  Hydrometeorological  Service  of  Serbia  is  the  organization  responsible  for  measurement  and  collecting  of  rainfall  data.  Unfortunately, this data is sometimes not available at desired time frames or in required locations,  therefore  it  is  necessary  to  temporarily  use  a  self-maid  or  commercial  rain  gauge.  There  are  an  inexpensive  tipping  bucket  rain  gauges  on  the  market  but  with  questionable measuring accuracy. In this paper the self-constructed cheap weighing rain gauge has been presented. Its characteristics and specification are analyzed, as well as its  areas  of  use  in  the  hydrotechnical  practice.   Finally,  the  comparison  of  measuring  results obtained using this rain gauge and professional, more expensive devices is given
PB  - University of Novi Sad, Faculty of Civil Engineering Subotica, Subotica
C3  - 6th International Conference: Contemporary Achievements in Civil Engineering
T1  - Development of DIY rain gauge of reasonable cost / Kako napraviti pouzdan kišomer prihvatljive cene
EP  - 408
SP  - 403
VL  - 34
DO  - 10.14415/konferencijaGFS2018.039
ER  - 

@conference{
author = "Vojt, Predrag and Pavlović, Dragutin and Prodanović, Dušan",
year = "2018",
abstract = "Data  regarding  the  quantity  and  the  intensity  of  rainfall  is  needed  for  the  purposes  of  the  hydrotechnical  practice.  The  Republic  Hydrometeorological  Service  of  Serbia  is  the  organization  responsible  for  measurement  and  collecting  of  rainfall  data.  Unfortunately, this data is sometimes not available at desired time frames or in required locations,  therefore  it  is  necessary  to  temporarily  use  a  self-maid  or  commercial  rain  gauge.  There  are  an  inexpensive  tipping  bucket  rain  gauges  on  the  market  but  with  questionable measuring accuracy. In this paper the self-constructed cheap weighing rain gauge has been presented. Its characteristics and specification are analyzed, as well as its  areas  of  use  in  the  hydrotechnical  practice.   Finally,  the  comparison  of  measuring  results obtained using this rain gauge and professional, more expensive devices is given",
publisher = "University of Novi Sad, Faculty of Civil Engineering Subotica, Subotica",
journal = "6th International Conference: Contemporary Achievements in Civil Engineering",
title = "Development of DIY rain gauge of reasonable cost / Kako napraviti pouzdan kišomer prihvatljive cene",
pages = "408-403",
volume = "34",
doi = "10.14415/konferencijaGFS2018.039"
}

Vojt, P., Pavlović, D.,& Prodanović, D.. (2018). Development of DIY rain gauge of reasonable cost / Kako napraviti pouzdan kišomer prihvatljive cene. in 6th International Conference: Contemporary Achievements in Civil Engineering
University of Novi Sad, Faculty of Civil Engineering Subotica, Subotica., 34, 403-408.
https://doi.org/10.14415/konferencijaGFS2018.039

Vojt P, Pavlović D, Prodanović D. Development of DIY rain gauge of reasonable cost / Kako napraviti pouzdan kišomer prihvatljive cene. in 6th International Conference: Contemporary Achievements in Civil Engineering. 2018;34:403-408.
doi:10.14415/konferencijaGFS2018.039 .

Vojt, Predrag, Pavlović, Dragutin, Prodanović, Dušan, "Development of DIY rain gauge of reasonable cost / Kako napraviti pouzdan kišomer prihvatljive cene" in 6th International Conference: Contemporary Achievements in Civil Engineering, 34 (2018):403-408,
https://doi.org/10.14415/konferencijaGFS2018.039 . .

TY  - CONF
AU  - Vojt, Predrag
AU  - Mladenović, Dimitrije
AU  - Prodanović, Dušan
PY  - 2018
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1632
AB  - For the purpose of work on hydraulic models at the laboratory of the “Jaroslav Černi” Institute for Development of Water Resources, a water level meter based on a buoyant force has been developed. This paper presents the specifications and characteristics of level meter, with particular focus on its linearity, dynamic characteristics and usage on hydraulic models. Its relatively simple construction and flexibility allow the user to perform the measurements with high precision.
PB  - Građevinski fakultet, Subotica
C3  - Zbornik radova 6. međunarodne konferencije Savremena dostignuća u građevinarstvu 2018
T1  - Development of precise water level sensor for laboratory measurements
T1  - Razvoj preciznog nivomera za laboratorijske potrebe
EP  - 401
SP  - 393
VL  - 34
DO  - 10.14415/konferencijaGFS2018.038
ER  - 

@conference{
author = "Vojt, Predrag and Mladenović, Dimitrije and Prodanović, Dušan",
year = "2018",
abstract = "For the purpose of work on hydraulic models at the laboratory of the “Jaroslav Černi” Institute for Development of Water Resources, a water level meter based on a buoyant force has been developed. This paper presents the specifications and characteristics of level meter, with particular focus on its linearity, dynamic characteristics and usage on hydraulic models. Its relatively simple construction and flexibility allow the user to perform the measurements with high precision.",
publisher = "Građevinski fakultet, Subotica",
journal = "Zbornik radova 6. međunarodne konferencije Savremena dostignuća u građevinarstvu 2018",
title = "Development of precise water level sensor for laboratory measurements, Razvoj preciznog nivomera za laboratorijske potrebe",
pages = "401-393",
volume = "34",
doi = "10.14415/konferencijaGFS2018.038"
}

Vojt, P., Mladenović, D.,& Prodanović, D.. (2018). Development of precise water level sensor for laboratory measurements. in Zbornik radova 6. međunarodne konferencije Savremena dostignuća u građevinarstvu 2018
Građevinski fakultet, Subotica., 34, 393-401.
https://doi.org/10.14415/konferencijaGFS2018.038

Vojt P, Mladenović D, Prodanović D. Development of precise water level sensor for laboratory measurements. in Zbornik radova 6. međunarodne konferencije Savremena dostignuća u građevinarstvu 2018. 2018;34:393-401.
doi:10.14415/konferencijaGFS2018.038 .

Vojt, Predrag, Mladenović, Dimitrije, Prodanović, Dušan, "Development of precise water level sensor for laboratory measurements" in Zbornik radova 6. međunarodne konferencije Savremena dostignuća u građevinarstvu 2018, 34 (2018):393-401,
https://doi.org/10.14415/konferencijaGFS2018.038 . .

TY  - CONF
AU  - Milovanović, Bojan
AU  - Zindović, Budo
AU  - Vojt, Predrag
AU  - Kapor, Radomir
AU  - Kuzmanović, Vladan
AU  - Savić, Ljubodrag
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1487
PB  - Univerzitet u Beogradu, Građevinski fakultet, Beograd
C3  - Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
T1  - Zavisnost hidrodinamičkih pritisaka u slapištu od suženja stepenastog brzotoka
EP  - 263
SP  - 254
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1487
ER  - 

@conference{
author = "Milovanović, Bojan and Zindović, Budo and Vojt, Predrag and Kapor, Radomir and Kuzmanović, Vladan and Savić, Ljubodrag",
year = "2016",
publisher = "Univerzitet u Beogradu, Građevinski fakultet, Beograd",
journal = "Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.",
title = "Zavisnost hidrodinamičkih pritisaka u slapištu od suženja stepenastog brzotoka",
pages = "263-254",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1487"
}

Milovanović, B., Zindović, B., Vojt, P., Kapor, R., Kuzmanović, V.,& Savić, L.. (2016). Zavisnost hidrodinamičkih pritisaka u slapištu od suženja stepenastog brzotoka. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
Univerzitet u Beogradu, Građevinski fakultet, Beograd., 254-263.
https://hdl.handle.net/21.15107/rcub_grafar_1487

Milovanović B, Zindović B, Vojt P, Kapor R, Kuzmanović V, Savić L. Zavisnost hidrodinamičkih pritisaka u slapištu od suženja stepenastog brzotoka. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:254-263.
https://hdl.handle.net/21.15107/rcub_grafar_1487 .

Milovanović, Bojan, Zindović, Budo, Vojt, Predrag, Kapor, Radomir, Kuzmanović, Vladan, Savić, Ljubodrag, "Zavisnost hidrodinamičkih pritisaka u slapištu od suženja stepenastog brzotoka" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):254-263,
https://hdl.handle.net/21.15107/rcub_grafar_1487 .

TY  - CONF
AU  - Starinac, Danica
AU  - Vojt, Predrag
AU  - Damnjanović, Marijana
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
AU  - Zindović, Budo
AU  - Žugić, Dragića
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1420
PB  - Univerzitet u Beogradu, Građevinski fakultet, Beograd
C3  - Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
T1  - Ispitivanja lavirint preliva na dva fizička modela različitih razmera
EP  - 201
SP  - 183
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1420
ER  - 

@conference{
author = "Starinac, Danica and Vojt, Predrag and Damnjanović, Marijana and Kapor, Radomir and Savić, Ljubodrag and Zindović, Budo and Žugić, Dragića",
year = "2016",
publisher = "Univerzitet u Beogradu, Građevinski fakultet, Beograd",
journal = "Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.",
title = "Ispitivanja lavirint preliva na dva fizička modela različitih razmera",
pages = "201-183",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1420"
}

Starinac, D., Vojt, P., Damnjanović, M., Kapor, R., Savić, L., Zindović, B.,& Žugić, D.. (2016). Ispitivanja lavirint preliva na dva fizička modela različitih razmera. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
Univerzitet u Beogradu, Građevinski fakultet, Beograd., 183-201.
https://hdl.handle.net/21.15107/rcub_grafar_1420

Starinac D, Vojt P, Damnjanović M, Kapor R, Savić L, Zindović B, Žugić D. Ispitivanja lavirint preliva na dva fizička modela različitih razmera. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:183-201.
https://hdl.handle.net/21.15107/rcub_grafar_1420 .

Starinac, Danica, Vojt, Predrag, Damnjanović, Marijana, Kapor, Radomir, Savić, Ljubodrag, Zindović, Budo, Žugić, Dragića, "Ispitivanja lavirint preliva na dva fizička modela različitih razmera" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):183-201,
https://hdl.handle.net/21.15107/rcub_grafar_1420 .

TY  - JOUR
AU  - Zindović, Budo
AU  - Vojt, Predrag
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/779
AB  - Wall deflection in supercritical flow induces standing waves which significantly influence the flow field close to the wall. This paper analyses the flow in the converging stepped spillway, using two scale-models with different step heights and convergence angles. Results show that the height and the width of the standing wave increase with the increase of the convergence angle. Air concentration decreases while the air-water mixture velocity and residual energy head increase in the vicinity of the converging wall and gradually attain the values for the undisturbed flow outside the standing wave. Compared to the prismatic chutes of equal upstream width, converging spillways are less efficient energy dissipators. Equations for predicting the maximum flow depth and the width-averaged residual energy are proposed.
PB  - Taylor and Francis Ltd.
T2  - Journal of Hydraulic Research
T1  - Converging stepped spillway flow
EP  - 707
IS  - 6
SP  - 699
VL  - 54
DO  - 10.1080/00221686.2016.1196754
ER  - 

@article{
author = "Zindović, Budo and Vojt, Predrag and Kapor, Radomir and Savić, Ljubodrag",
year = "2016",
abstract = "Wall deflection in supercritical flow induces standing waves which significantly influence the flow field close to the wall. This paper analyses the flow in the converging stepped spillway, using two scale-models with different step heights and convergence angles. Results show that the height and the width of the standing wave increase with the increase of the convergence angle. Air concentration decreases while the air-water mixture velocity and residual energy head increase in the vicinity of the converging wall and gradually attain the values for the undisturbed flow outside the standing wave. Compared to the prismatic chutes of equal upstream width, converging spillways are less efficient energy dissipators. Equations for predicting the maximum flow depth and the width-averaged residual energy are proposed.",
publisher = "Taylor and Francis Ltd.",
journal = "Journal of Hydraulic Research",
title = "Converging stepped spillway flow",
pages = "707-699",
number = "6",
volume = "54",
doi = "10.1080/00221686.2016.1196754"
}

Zindović, B., Vojt, P., Kapor, R.,& Savić, L.. (2016). Converging stepped spillway flow. in Journal of Hydraulic Research
Taylor and Francis Ltd.., 54(6), 699-707.
https://doi.org/10.1080/00221686.2016.1196754

Zindović B, Vojt P, Kapor R, Savić L. Converging stepped spillway flow. in Journal of Hydraulic Research. 2016;54(6):699-707.
doi:10.1080/00221686.2016.1196754 .

Zindović, Budo, Vojt, Predrag, Kapor, Radomir, Savić, Ljubodrag, "Converging stepped spillway flow" in Journal of Hydraulic Research, 54, no. 6 (2016):699-707,
https://doi.org/10.1080/00221686.2016.1196754 . .

TY  - CONF
AU  - Vojt, Predrag
AU  - Zindović, Budo
AU  - Prodanović, Dušan
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1486
PB  - Gradjevinski fakultet Univerziteta u Beogradu,
C3  - Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
T1  - Merenje hidrauličkih veličina u dvofaznom fluidu
EP  - 574
SP  - 567
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1486
ER  - 

@conference{
author = "Vojt, Predrag and Zindović, Budo and Prodanović, Dušan",
year = "2016",
publisher = "Gradjevinski fakultet Univerziteta u Beogradu,",
journal = "Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.",
title = "Merenje hidrauličkih veličina u dvofaznom fluidu",
pages = "574-567",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1486"
}

Vojt, P., Zindović, B.,& Prodanović, D.. (2016). Merenje hidrauličkih veličina u dvofaznom fluidu. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
Gradjevinski fakultet Univerziteta u Beogradu,., 567-574.
https://hdl.handle.net/21.15107/rcub_grafar_1486

Vojt P, Zindović B, Prodanović D. Merenje hidrauličkih veličina u dvofaznom fluidu. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:567-574.
https://hdl.handle.net/21.15107/rcub_grafar_1486 .

Vojt, Predrag, Zindović, Budo, Prodanović, Dušan, "Merenje hidrauličkih veličina u dvofaznom fluidu" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):567-574,
https://hdl.handle.net/21.15107/rcub_grafar_1486 .

TY  - CONF
AU  - Milovanović, B.
AU  - Zindović, Budo
AU  - Vojt, Predrag
AU  - Kapor, Radomir
AU  - Kuzmanović, Vladan
AU  - Savić, Ljubodrag
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1453
PB  - Univerzitet u Beogradu, Građevinski fakultet, Beograd
C3  - Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
T1  - Zavisnost hidrodinamičkih pritisaka u slapištu od veličine stepenika stepenastog brzotoka
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1453
ER  - 

@conference{
author = "Milovanović, B. and Zindović, Budo and Vojt, Predrag and Kapor, Radomir and Kuzmanović, Vladan and Savić, Ljubodrag",
year = "2016",
publisher = "Univerzitet u Beogradu, Građevinski fakultet, Beograd",
journal = "Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju",
title = "Zavisnost hidrodinamičkih pritisaka u slapištu od veličine stepenika stepenastog brzotoka",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1453"
}

Milovanović, B., Zindović, B., Vojt, P., Kapor, R., Kuzmanović, V.,& Savić, L.. (2016). Zavisnost hidrodinamičkih pritisaka u slapištu od veličine stepenika stepenastog brzotoka. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju
Univerzitet u Beogradu, Građevinski fakultet, Beograd..
https://hdl.handle.net/21.15107/rcub_grafar_1453

Milovanović B, Zindović B, Vojt P, Kapor R, Kuzmanović V, Savić L. Zavisnost hidrodinamičkih pritisaka u slapištu od veličine stepenika stepenastog brzotoka. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju. 2016;.
https://hdl.handle.net/21.15107/rcub_grafar_1453 .

Milovanović, B., Zindović, Budo, Vojt, Predrag, Kapor, Radomir, Kuzmanović, Vladan, Savić, Ljubodrag, "Zavisnost hidrodinamičkih pritisaka u slapištu od veličine stepenika stepenastog brzotoka" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju (2016),
https://hdl.handle.net/21.15107/rcub_grafar_1453 .

TY  - CONF
AU  - Vojt, Predrag
AU  - Pavlović, Dragutin
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1480
PB  - Univerzitet u Beogradu, Građevinski fakultet, Beograd
C3  - Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
T1  - Dinamičke karakteristike pluviografa
EP  - 539
SP  - 527
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1480
ER  - 

@conference{
author = "Vojt, Predrag and Pavlović, Dragutin",
year = "2016",
publisher = "Univerzitet u Beogradu, Građevinski fakultet, Beograd",
journal = "Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.",
title = "Dinamičke karakteristike pluviografa",
pages = "539-527",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1480"
}

Vojt, P.,& Pavlović, D.. (2016). Dinamičke karakteristike pluviografa. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
Univerzitet u Beogradu, Građevinski fakultet, Beograd., 527-539.
https://hdl.handle.net/21.15107/rcub_grafar_1480

Vojt P, Pavlović D. Dinamičke karakteristike pluviografa. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:527-539.
https://hdl.handle.net/21.15107/rcub_grafar_1480 .

Vojt, Predrag, Pavlović, Dragutin, "Dinamičke karakteristike pluviografa" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):527-539,
https://hdl.handle.net/21.15107/rcub_grafar_1480 .

TY  - CONF
AU  - Damnjanović, Marijana
AU  - Vojt, Predrag
AU  - Starinac, Danica
AU  - Žugić, Dragiša
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1390
PB  - Univerzitet u Beogradu, Građevinski fakultet, Beograd
C3  - Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
T1  - Analiza hidrodinamičkih prtisaka u umirujućem bazenu nasute brane
EP  - 272
SP  - 264
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1390
ER  - 

@conference{
author = "Damnjanović, Marijana and Vojt, Predrag and Starinac, Danica and Žugić, Dragiša and Kapor, Radomir and Savić, Ljubodrag",
year = "2016",
publisher = "Univerzitet u Beogradu, Građevinski fakultet, Beograd",
journal = "Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.",
title = "Analiza hidrodinamičkih prtisaka u umirujućem bazenu nasute brane",
pages = "272-264",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1390"
}

Damnjanović, M., Vojt, P., Starinac, D., Žugić, D., Kapor, R.,& Savić, L.. (2016). Analiza hidrodinamičkih prtisaka u umirujućem bazenu nasute brane. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.
Univerzitet u Beogradu, Građevinski fakultet, Beograd., 264-272.
https://hdl.handle.net/21.15107/rcub_grafar_1390

Damnjanović M, Vojt P, Starinac D, Žugić D, Kapor R, Savić L. Analiza hidrodinamičkih prtisaka u umirujućem bazenu nasute brane. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:264-272.
https://hdl.handle.net/21.15107/rcub_grafar_1390 .

Damnjanović, Marijana, Vojt, Predrag, Starinac, Danica, Žugić, Dragiša, Kapor, Radomir, Savić, Ljubodrag, "Analiza hidrodinamičkih prtisaka u umirujućem bazenu nasute brane" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):264-272,
https://hdl.handle.net/21.15107/rcub_grafar_1390 .

TY  - CONF
AU  - Milovanović, Bojan
AU  - Zindović, Budo
AU  - Stojnić, Ivan
AU  - Vojt, Predrag
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
AU  - Kuzmanović, Vladan
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1355
PB  - Građevinski fakultet, Subotica
C3  - 3. Međunarodna konferencija Savremena dostignuća u građevinarstvu, Subotica, 24. april 2015.
T1  - Distribution of Hydrodynamic Load in the Stilling Basin
T1  - Zavisnost hidrodinamičkog opterećenja slapišta od protoka i nivoa donje vode
EP  - 549
SP  - 543
VL  - 31
DO  - 10.14415/konferencijaGFS2015.067
ER  - 

@conference{
author = "Milovanović, Bojan and Zindović, Budo and Stojnić, Ivan and Vojt, Predrag and Kapor, Radomir and Savić, Ljubodrag and Kuzmanović, Vladan",
year = "2015",
publisher = "Građevinski fakultet, Subotica",
journal = "3. Međunarodna konferencija Savremena dostignuća u građevinarstvu, Subotica, 24. april 2015.",
title = "Distribution of Hydrodynamic Load in the Stilling Basin, Zavisnost hidrodinamičkog opterećenja slapišta od protoka i nivoa donje vode",
pages = "549-543",
volume = "31",
doi = "10.14415/konferencijaGFS2015.067"
}

Milovanović, B., Zindović, B., Stojnić, I., Vojt, P., Kapor, R., Savić, L.,& Kuzmanović, V.. (2015). Distribution of Hydrodynamic Load in the Stilling Basin. in 3. Međunarodna konferencija Savremena dostignuća u građevinarstvu, Subotica, 24. april 2015.
Građevinski fakultet, Subotica., 31, 543-549.
https://doi.org/10.14415/konferencijaGFS2015.067

Milovanović B, Zindović B, Stojnić I, Vojt P, Kapor R, Savić L, Kuzmanović V. Distribution of Hydrodynamic Load in the Stilling Basin. in 3. Međunarodna konferencija Savremena dostignuća u građevinarstvu, Subotica, 24. april 2015.. 2015;31:543-549.
doi:10.14415/konferencijaGFS2015.067 .

Milovanović, Bojan, Zindović, Budo, Stojnić, Ivan, Vojt, Predrag, Kapor, Radomir, Savić, Ljubodrag, Kuzmanović, Vladan, "Distribution of Hydrodynamic Load in the Stilling Basin" in 3. Međunarodna konferencija Savremena dostignuća u građevinarstvu, Subotica, 24. april 2015., 31 (2015):543-549,
https://doi.org/10.14415/konferencijaGFS2015.067 . .

TY  - JOUR
AU  - Starinac, Danica
AU  - Vojt, Predrag
AU  - Damnjanović, Marijana
AU  - Žugić, Dragiša
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
AU  - Zindović, Budo
AU  - Đajić, Predrag
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/688
AB  - The design of the Beni Slimane Dam (Medea Province, Algeria) has been verified by scale model analyses, conducted on two separate physical models - the partial model of the labyrinth spillway and the complete model of flood evacuation structures. This paper describes the analyses carried out on the complete model, scaled 1:30. The initial design of the chute and stilling basin was optimized on the basis of model testing. Tests carried out on the scale model with a movable bottom (river bed) were very helpful for the design of downstream erosion protection.
PB  - Serbian Water Pollution Control Society, Belgrade
T2  - Water research and management
T1  - Scale modeling of Beni Slimane Dam
EP  - 22
IS  - 1
SP  - 9
VL  - 5
UR  - https://hdl.handle.net/21.15107/rcub_grafar_688
ER  - 

@article{
author = "Starinac, Danica and Vojt, Predrag and Damnjanović, Marijana and Žugić, Dragiša and Kapor, Radomir and Savić, Ljubodrag and Zindović, Budo and Đajić, Predrag",
year = "2015",
abstract = "The design of the Beni Slimane Dam (Medea Province, Algeria) has been verified by scale model analyses, conducted on two separate physical models - the partial model of the labyrinth spillway and the complete model of flood evacuation structures. This paper describes the analyses carried out on the complete model, scaled 1:30. The initial design of the chute and stilling basin was optimized on the basis of model testing. Tests carried out on the scale model with a movable bottom (river bed) were very helpful for the design of downstream erosion protection.",
publisher = "Serbian Water Pollution Control Society, Belgrade",
journal = "Water research and management",
title = "Scale modeling of Beni Slimane Dam",
pages = "22-9",
number = "1",
volume = "5",
url = "https://hdl.handle.net/21.15107/rcub_grafar_688"
}

Starinac, D., Vojt, P., Damnjanović, M., Žugić, D., Kapor, R., Savić, L., Zindović, B.,& Đajić, P.. (2015). Scale modeling of Beni Slimane Dam. in Water research and management
Serbian Water Pollution Control Society, Belgrade., 5(1), 9-22.
https://hdl.handle.net/21.15107/rcub_grafar_688

Starinac D, Vojt P, Damnjanović M, Žugić D, Kapor R, Savić L, Zindović B, Đajić P. Scale modeling of Beni Slimane Dam. in Water research and management. 2015;5(1):9-22.
https://hdl.handle.net/21.15107/rcub_grafar_688 .

Starinac, Danica, Vojt, Predrag, Damnjanović, Marijana, Žugić, Dragiša, Kapor, Radomir, Savić, Ljubodrag, Zindović, Budo, Đajić, Predrag, "Scale modeling of Beni Slimane Dam" in Water research and management, 5, no. 1 (2015):9-22,
https://hdl.handle.net/21.15107/rcub_grafar_688 .

TY  - CONF
AU  - Zindović, Budo
AU  - Vojt, Predrag
AU  - Kapor, Radomir
AU  - Savić, Ljubodrag
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1328
PB  - Belgrade
C3  - Proceedings of the IWA 7th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 September
T1  - Scale and numerical modelling of the converging stepped spillway flow
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1328
ER  - 

@conference{
author = "Zindović, Budo and Vojt, Predrag and Kapor, Radomir and Savić, Ljubodrag",
year = "2015",
publisher = "Belgrade",
journal = "Proceedings of the IWA 7th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 September",
title = "Scale and numerical modelling of the converging stepped spillway flow",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1328"
}

Zindović, B., Vojt, P., Kapor, R.,& Savić, L.. (2015). Scale and numerical modelling of the converging stepped spillway flow. in Proceedings of the IWA 7th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 September
Belgrade..
https://hdl.handle.net/21.15107/rcub_grafar_1328

Zindović B, Vojt P, Kapor R, Savić L. Scale and numerical modelling of the converging stepped spillway flow. in Proceedings of the IWA 7th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 September. 2015;.
https://hdl.handle.net/21.15107/rcub_grafar_1328 .

Zindović, Budo, Vojt, Predrag, Kapor, Radomir, Savić, Ljubodrag, "Scale and numerical modelling of the converging stepped spillway flow" in Proceedings of the IWA 7th Eastern European Young Water Professionals Conference, Belgrade, Serbia, 17-19 September (2015),
https://hdl.handle.net/21.15107/rcub_grafar_1328 .