TY  - CONF
AU  - Lučić, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1472
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  - Numeričko modeliranje burnog tečenja u provodniku sa horizontalnom krivinom
EP  - 64
SP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1472
ER  - 

@conference{
author = "Lučić, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
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 = "Numeričko modeliranje burnog tečenja u provodniku sa horizontalnom krivinom",
pages = "64-52",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1472"
}

Lučić, M., Savić, L., Kapor, R.,& Mladenović, N.. (2016). Numeričko modeliranje burnog tečenja u provodniku sa horizontalnom krivinom. 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., 52-64.
https://hdl.handle.net/21.15107/rcub_grafar_1472

Lučić M, Savić L, Kapor R, Mladenović N. Numeričko modeliranje burnog tečenja u provodniku sa horizontalnom krivinom. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:52-64.
https://hdl.handle.net/21.15107/rcub_grafar_1472 .

Lučić, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Numeričko modeliranje burnog tečenja u provodniku sa horizontalnom krivinom" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):52-64,
https://hdl.handle.net/21.15107/rcub_grafar_1472 .

TY  - CONF
AU  - Lučić, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1373
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  - Burno tečenje u horizontalnoj krivini zatvorenog provodnika
EP  - 243
SP  - 230
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1373
ER  - 

@conference{
author = "Lučić, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
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 = "Burno tečenje u horizontalnoj krivini zatvorenog provodnika",
pages = "243-230",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1373"
}

Lučić, M., Savić, L., Kapor, R.,& Mladenović, N.. (2016). Burno tečenje u horizontalnoj krivini zatvorenog provodnika. 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., 230-243.
https://hdl.handle.net/21.15107/rcub_grafar_1373

Lučić M, Savić L, Kapor R, Mladenović N. Burno tečenje u horizontalnoj krivini zatvorenog provodnika. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:230-243.
https://hdl.handle.net/21.15107/rcub_grafar_1373 .

Lučić, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Burno tečenje u horizontalnoj krivini zatvorenog provodnika" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):230-243,
https://hdl.handle.net/21.15107/rcub_grafar_1373 .

TY  - CONF
AU  - Lučić, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1361
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  - Gubitak energije pri helikoidnom tečenju u zatvorenom provodniku sa krivinom
EP  - 253
SP  - 244
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1361
ER  - 

@conference{
author = "Lučić, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
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 = "Gubitak energije pri helikoidnom tečenju u zatvorenom provodniku sa krivinom",
pages = "253-244",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1361"
}

Lučić, M., Savić, L., Kapor, R.,& Mladenović, N.. (2016). Gubitak energije pri helikoidnom tečenju u zatvorenom provodniku sa krivinom. 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., 244-253.
https://hdl.handle.net/21.15107/rcub_grafar_1361

Lučić M, Savić L, Kapor R, Mladenović N. Gubitak energije pri helikoidnom tečenju u zatvorenom provodniku sa krivinom. in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015.. 2016;:244-253.
https://hdl.handle.net/21.15107/rcub_grafar_1361 .

Lučić, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Gubitak energije pri helikoidnom tečenju u zatvorenom provodniku sa krivinom" in Zbornik radova 17. naučnog savetovanja Srpskog društva za hidraulička istraživanja i Srpskog društva za hidrologiju, Vršac, 5-6. oktobar 2015. (2016):244-253,
https://hdl.handle.net/21.15107/rcub_grafar_1361 .

TY  - JOUR
AU  - Kuzmanović, Vladan
AU  - Savić, Ljubodrag
AU  - Mladenović, Nikola
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/724
AB  - Roller Compacted Concrete (RCC) is a special concrete mixture with low cement content, frequently used for concrete gravity dams. This paper deals with the 3D finite element model for unsteady phased thermal-stress analysis of RCC dams. Model calibration and verification has been done, based on the in-situ measurements of the Platanovryssi dam. The study has been done using the actual dam shape, RCC time schedule, and material properties. The results prove that the recommended 3D model enables a reliable thermal-stress prediction and transversal joint distance computation for an RCC gravity dam.
AB  - Beton zbijen valjanjem ('valjani beton' ili 'RCC' - Roller Compacted Concrete) je vrsta betona sa niskim sadržajem cementa koja se često koristi kod betonskih gravitacionih brana. U radu je razmatran prostorni model za neustaljenu faznu termičko- naponsku analizu brana od valjanog betona. Kalibracija i verifikacija modela uređeni su na osnovu terenskih merenja na brani Platanovrisi. Istraživanje je urađeno uzimajući u obzir stvarnu geometriju brane, dinamiku ugradnje RCC-a i stvarne osobine materijala. Rezultati proračuna pokazuju da razvijeni 3D model omogućava pouzdano predviđanje termičkih napona i određivanje rastojanja između razdelnica kod gravitacionih RCC brana.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Thermal-stress behaviour of RCC gravity dams
T1  - Termičko naponsko stanje gravitacionih brana od valjanog betona
EP  - 34
IS  - 1
SP  - 30
VL  - 43
DO  - 10.5937/fmet1501030k
ER  - 

@article{
author = "Kuzmanović, Vladan and Savić, Ljubodrag and Mladenović, Nikola",
year = "2015",
abstract = "Roller Compacted Concrete (RCC) is a special concrete mixture with low cement content, frequently used for concrete gravity dams. This paper deals with the 3D finite element model for unsteady phased thermal-stress analysis of RCC dams. Model calibration and verification has been done, based on the in-situ measurements of the Platanovryssi dam. The study has been done using the actual dam shape, RCC time schedule, and material properties. The results prove that the recommended 3D model enables a reliable thermal-stress prediction and transversal joint distance computation for an RCC gravity dam., Beton zbijen valjanjem ('valjani beton' ili 'RCC' - Roller Compacted Concrete) je vrsta betona sa niskim sadržajem cementa koja se često koristi kod betonskih gravitacionih brana. U radu je razmatran prostorni model za neustaljenu faznu termičko- naponsku analizu brana od valjanog betona. Kalibracija i verifikacija modela uređeni su na osnovu terenskih merenja na brani Platanovrisi. Istraživanje je urađeno uzimajući u obzir stvarnu geometriju brane, dinamiku ugradnje RCC-a i stvarne osobine materijala. Rezultati proračuna pokazuju da razvijeni 3D model omogućava pouzdano predviđanje termičkih napona i određivanje rastojanja između razdelnica kod gravitacionih RCC brana.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Thermal-stress behaviour of RCC gravity dams, Termičko naponsko stanje gravitacionih brana od valjanog betona",
pages = "34-30",
number = "1",
volume = "43",
doi = "10.5937/fmet1501030k"
}

Kuzmanović, V., Savić, L.,& Mladenović, N.. (2015). Thermal-stress behaviour of RCC gravity dams. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 43(1), 30-34.
https://doi.org/10.5937/fmet1501030k

Kuzmanović V, Savić L, Mladenović N. Thermal-stress behaviour of RCC gravity dams. in FME Transactions. 2015;43(1):30-34.
doi:10.5937/fmet1501030k .

Kuzmanović, Vladan, Savić, Ljubodrag, Mladenović, Nikola, "Thermal-stress behaviour of RCC gravity dams" in FME Transactions, 43, no. 1 (2015):30-34,
https://doi.org/10.5937/fmet1501030k . .

TY  - JOUR
AU  - Lučić, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/652
AB  - Numerical modeling of supercritical flow in closed conduit bend is a continuation of the scale model experiments. The main goal of application of numerical model is to extend the range of investigation and to simulate conditions that could not be examined on scale model due to the limited capacity of the laboratory installation. Using the results of the numerical modeling, general conclusions and suggested empirical relationships (based on the scale model experiments) for the onset of a certain type of flow in the conduit, are checked. Numerical model is prepared using software package Fluent (Ansys-Fluid Dynamic).
AB  - Numeričko modeliranje burnog tečenja u krivini provodnika kružnog poprečnog preseka predstavlja nastavak ispitivanja koja su urađena na fizičkom modelu. Osnovni cilj primene numeričkog modela je da se proširi opseg ispitivanja, odnosno da se ispitaju drugačije karakteristike krivine, kao i uslovi tečenja u provodniku, koji zbog ograničenosti kapaciteta laboratorije, nisu mogli da se ispitaju na fizičkom modelu. Numerički model je formiranom u okviru programskog paketa Fluent (Ansys-Fluid Dynamic) i njegovom primenom su provereni opšti zaključci do kojih se došlo tokom modelskih ispitivanja, kao i primenljivost predloženih empirijskih izraza iz literature za nastanak određenog tipa tečenja u provodniku.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Numerical modeling of supercritical flow in closed conduit bend
T1  - Numeričko modeliranje burnog tečenja u krivini zatvorenog provodnika
EP  - 260
IS  - 4-6
SP  - 253
VL  - 47
UR  - https://hdl.handle.net/21.15107/rcub_grafar_652
ER  - 

@article{
author = "Lučić, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
year = "2015",
abstract = "Numerical modeling of supercritical flow in closed conduit bend is a continuation of the scale model experiments. The main goal of application of numerical model is to extend the range of investigation and to simulate conditions that could not be examined on scale model due to the limited capacity of the laboratory installation. Using the results of the numerical modeling, general conclusions and suggested empirical relationships (based on the scale model experiments) for the onset of a certain type of flow in the conduit, are checked. Numerical model is prepared using software package Fluent (Ansys-Fluid Dynamic)., Numeričko modeliranje burnog tečenja u krivini provodnika kružnog poprečnog preseka predstavlja nastavak ispitivanja koja su urađena na fizičkom modelu. Osnovni cilj primene numeričkog modela je da se proširi opseg ispitivanja, odnosno da se ispitaju drugačije karakteristike krivine, kao i uslovi tečenja u provodniku, koji zbog ograničenosti kapaciteta laboratorije, nisu mogli da se ispitaju na fizičkom modelu. Numerički model je formiranom u okviru programskog paketa Fluent (Ansys-Fluid Dynamic) i njegovom primenom su provereni opšti zaključci do kojih se došlo tokom modelskih ispitivanja, kao i primenljivost predloženih empirijskih izraza iz literature za nastanak određenog tipa tečenja u provodniku.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Numerical modeling of supercritical flow in closed conduit bend, Numeričko modeliranje burnog tečenja u krivini zatvorenog provodnika",
pages = "260-253",
number = "4-6",
volume = "47",
url = "https://hdl.handle.net/21.15107/rcub_grafar_652"
}

Lučić, M., Savić, L., Kapor, R.,& Mladenović, N.. (2015). Numerical modeling of supercritical flow in closed conduit bend. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 47(4-6), 253-260.
https://hdl.handle.net/21.15107/rcub_grafar_652

Lučić M, Savić L, Kapor R, Mladenović N. Numerical modeling of supercritical flow in closed conduit bend. in Vodoprivreda. 2015;47(4-6):253-260.
https://hdl.handle.net/21.15107/rcub_grafar_652 .

Lučić, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Numerical modeling of supercritical flow in closed conduit bend" in Vodoprivreda, 47, no. 4-6 (2015):253-260,
https://hdl.handle.net/21.15107/rcub_grafar_652 .

TY  - JOUR
AU  - Kolarević, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/696
AB  - A complex flow pattern occurring in a circular conduit bend with supercritical flow has been studied. The main objective was to obtain reliable criteria for prediction of the onset of helical and choking flow, in order to facilitate the design of bottom outlets, tunnel spillways and drainage collectors with bends. A series of scale model experiments provided data for developing empirical relationships describing the effects of the bend curvature, bend deflection angle and approach flow conditions (relative flow depth and Froude number) on the inception of helical and choking flow. Expressions for the energy bend loss coefficient were also proposed. The bend curvature and approach flow conditions proved to have a major influence on the onset of helical flow, while the deflection angle becomes an important parameter for angles less than 45 degrees. Bend curvature and deflection angle have commensurable influence on the onset of choking flow.
PB  - Taylor and Francis Ltd.
T2  - Journal of Hydraulic Research
T1  - Supercritical flow in circular conduit bends
EP  - 100
IS  - 1
SP  - 93
VL  - 53
DO  - 10.1080/00221686.2014.932856
ER  - 

@article{
author = "Kolarević, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
year = "2015",
abstract = "A complex flow pattern occurring in a circular conduit bend with supercritical flow has been studied. The main objective was to obtain reliable criteria for prediction of the onset of helical and choking flow, in order to facilitate the design of bottom outlets, tunnel spillways and drainage collectors with bends. A series of scale model experiments provided data for developing empirical relationships describing the effects of the bend curvature, bend deflection angle and approach flow conditions (relative flow depth and Froude number) on the inception of helical and choking flow. Expressions for the energy bend loss coefficient were also proposed. The bend curvature and approach flow conditions proved to have a major influence on the onset of helical flow, while the deflection angle becomes an important parameter for angles less than 45 degrees. Bend curvature and deflection angle have commensurable influence on the onset of choking flow.",
publisher = "Taylor and Francis Ltd.",
journal = "Journal of Hydraulic Research",
title = "Supercritical flow in circular conduit bends",
pages = "100-93",
number = "1",
volume = "53",
doi = "10.1080/00221686.2014.932856"
}

Kolarević, M., Savić, L., Kapor, R.,& Mladenović, N.. (2015). Supercritical flow in circular conduit bends. in Journal of Hydraulic Research
Taylor and Francis Ltd.., 53(1), 93-100.
https://doi.org/10.1080/00221686.2014.932856

Kolarević M, Savić L, Kapor R, Mladenović N. Supercritical flow in circular conduit bends. in Journal of Hydraulic Research. 2015;53(1):93-100.
doi:10.1080/00221686.2014.932856 .

Kolarević, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Supercritical flow in circular conduit bends" in Journal of Hydraulic Research, 53, no. 1 (2015):93-100,
https://doi.org/10.1080/00221686.2014.932856 . .

TY  - JOUR
AU  - Zindović, Budo
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/609
AB  - This paper deals with flow modelling of the stepped spillway for the Bogovina dam. The analysis was conducted using three approaches: scalemodelling, empirical equations and numerical modelling. An acceptable agreement was achieved between the empirical equations and the numerical model results, while both of them exhibit considerable differences when compared to scale-model. These discrepancies can be contributed to the difficulties in modelling the process of air-entrainment. Since air-entrainment is important for providing good estimates, existing empirical equations as well as numerical models require further improvements.
AB  - Tema rada je modeliranje strujnog polja na stepenastom brzotoku brane Bogovina. Analiza je sprovedena na rezultatima dobijenih pomoću: fizičkog modela, empirijskih jednačina i numeričkog modela. Slaganja rezultata empirijskih jednačina i numeričkog modela su u prihvatljivim granicama, dok je primećeno njihovo značajno odstupanje od rezultata merenja na fizičkom modelu. Uzrok ovih razlika je proces samo-aeracije mlaza. Budući da je ovaj proces važan za ovaj vid strujanja, nepohodno je poboljšati postojeće empirijske zavisnosti i numeričke modele.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Stepped spillway flow: Comparison of numerical and scale models
T1  - Strujanje u stepenastom brzotoku - poređenje rezultata fizičkog i numeričkog modela
EP  - 223
IS  - 3
SP  - 218
VL  - 42
DO  - 10.5937/fmet1403218z
ER  - 

@article{
author = "Zindović, Budo and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
year = "2014",
abstract = "This paper deals with flow modelling of the stepped spillway for the Bogovina dam. The analysis was conducted using three approaches: scalemodelling, empirical equations and numerical modelling. An acceptable agreement was achieved between the empirical equations and the numerical model results, while both of them exhibit considerable differences when compared to scale-model. These discrepancies can be contributed to the difficulties in modelling the process of air-entrainment. Since air-entrainment is important for providing good estimates, existing empirical equations as well as numerical models require further improvements., Tema rada je modeliranje strujnog polja na stepenastom brzotoku brane Bogovina. Analiza je sprovedena na rezultatima dobijenih pomoću: fizičkog modela, empirijskih jednačina i numeričkog modela. Slaganja rezultata empirijskih jednačina i numeričkog modela su u prihvatljivim granicama, dok je primećeno njihovo značajno odstupanje od rezultata merenja na fizičkom modelu. Uzrok ovih razlika je proces samo-aeracije mlaza. Budući da je ovaj proces važan za ovaj vid strujanja, nepohodno je poboljšati postojeće empirijske zavisnosti i numeričke modele.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Stepped spillway flow: Comparison of numerical and scale models, Strujanje u stepenastom brzotoku - poređenje rezultata fizičkog i numeričkog modela",
pages = "223-218",
number = "3",
volume = "42",
doi = "10.5937/fmet1403218z"
}

Zindović, B., Savić, L., Kapor, R.,& Mladenović, N.. (2014). Stepped spillway flow: Comparison of numerical and scale models. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 42(3), 218-223.
https://doi.org/10.5937/fmet1403218z

Zindović B, Savić L, Kapor R, Mladenović N. Stepped spillway flow: Comparison of numerical and scale models. in FME Transactions. 2014;42(3):218-223.
doi:10.5937/fmet1403218z .

Zindović, Budo, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Stepped spillway flow: Comparison of numerical and scale models" in FME Transactions, 42, no. 3 (2014):218-223,
https://doi.org/10.5937/fmet1403218z . .

TY  - JOUR
AU  - Kolarević, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/621
AB  - In this paper a complex flow pattern occurring in a closed conduit bend with supercritical flow is analyzed. The research was done by a scale (physical hydraulic) model, and a numerical model developed in Ansys (Fluent) program surrounding. This article compares the results obtained by numerical and physical (scale) models, providing comments and recommendations for their application. Based on these results, simple empirical relationships were developed, describing the effects of the bend deflection angle and approach flow conditions (non dimensional depth and the Froude number upstream from the bend) on the considered flow.
AB  - U radu je analizirano složeno strujanje koje nastaje u krivini zatvorenog provodnika u burnom toku. Ispitivanja su urađena na hidrauličkom fizičkom modelu, ali i na numeričkom, formiranom u okviru programskog paketa Ansys (Fluent). Rezultati sa hidrauličkog modela su korišćeni za kalibraciju numeričkog, pa je u okviru rada prikazano poređenje rezultata dobijenih na pomenuta dva modela, sa komentarima i preporukama za njihovu primenu. Na osnovu izvršenih ispitivanja date su jednostavne zavisnosti kojima se opisuje uticaj veličine skretnog ugla i prilaznih uslova tečenja (dubina i Frudov broj uzvodno od krivine) na razmatrano tečenje.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Supercritical flow in circular pipe bends
T1  - Burno tečenje u krivini kružne cevi
EP  - 132
IS  - 2
SP  - 128
VL  - 42
DO  - 10.5937/fmet1402128K
ER  - 

@article{
author = "Kolarević, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
year = "2014",
abstract = "In this paper a complex flow pattern occurring in a closed conduit bend with supercritical flow is analyzed. The research was done by a scale (physical hydraulic) model, and a numerical model developed in Ansys (Fluent) program surrounding. This article compares the results obtained by numerical and physical (scale) models, providing comments and recommendations for their application. Based on these results, simple empirical relationships were developed, describing the effects of the bend deflection angle and approach flow conditions (non dimensional depth and the Froude number upstream from the bend) on the considered flow., U radu je analizirano složeno strujanje koje nastaje u krivini zatvorenog provodnika u burnom toku. Ispitivanja su urađena na hidrauličkom fizičkom modelu, ali i na numeričkom, formiranom u okviru programskog paketa Ansys (Fluent). Rezultati sa hidrauličkog modela su korišćeni za kalibraciju numeričkog, pa je u okviru rada prikazano poređenje rezultata dobijenih na pomenuta dva modela, sa komentarima i preporukama za njihovu primenu. Na osnovu izvršenih ispitivanja date su jednostavne zavisnosti kojima se opisuje uticaj veličine skretnog ugla i prilaznih uslova tečenja (dubina i Frudov broj uzvodno od krivine) na razmatrano tečenje.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Supercritical flow in circular pipe bends, Burno tečenje u krivini kružne cevi",
pages = "132-128",
number = "2",
volume = "42",
doi = "10.5937/fmet1402128K"
}

Kolarević, M., Savić, L., Kapor, R.,& Mladenović, N.. (2014). Supercritical flow in circular pipe bends. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 42(2), 128-132.
https://doi.org/10.5937/fmet1402128K

Kolarević M, Savić L, Kapor R, Mladenović N. Supercritical flow in circular pipe bends. in FME Transactions. 2014;42(2):128-132.
doi:10.5937/fmet1402128K .

Kolarević, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Supercritical flow in circular pipe bends" in FME Transactions, 42, no. 2 (2014):128-132,
https://doi.org/10.5937/fmet1402128K . .

TY  - JOUR
AU  - Kuzmanović, Vladan
AU  - Savić, Ljubodrag
AU  - Mladenović, Nikola
PY  - 2013
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/556
AB  - A new approach in 3D numerical modeling for unsteady phased thermal-stress analysis of a massive concrete hydraulic structure is presented. The temperature field is computed first, providing a drive for the unsteady, nonlinear, viscoelastic, stress-strain analysis. This model is devised with actual initial and boundary conditions, appropriate material properties, and the observed concrete placement schedule. The verification is based on the field investigations of the Platanovryssi dam. The results of a long-term analysis have shown close agreement with the observed dam conditions. The proposed model presents a reliable tool for thermal-stress computation and transverse contraction joint distance evaluation.
T2  - Journal of Thermal Stresses
T1  - Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams
EP  - 134
IS  - 2
SP  - 112
VL  - 36
DO  - 10.1080/01495739.2013.764795
ER  - 

@article{
author = "Kuzmanović, Vladan and Savić, Ljubodrag and Mladenović, Nikola",
year = "2013",
abstract = "A new approach in 3D numerical modeling for unsteady phased thermal-stress analysis of a massive concrete hydraulic structure is presented. The temperature field is computed first, providing a drive for the unsteady, nonlinear, viscoelastic, stress-strain analysis. This model is devised with actual initial and boundary conditions, appropriate material properties, and the observed concrete placement schedule. The verification is based on the field investigations of the Platanovryssi dam. The results of a long-term analysis have shown close agreement with the observed dam conditions. The proposed model presents a reliable tool for thermal-stress computation and transverse contraction joint distance evaluation.",
journal = "Journal of Thermal Stresses",
title = "Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams",
pages = "134-112",
number = "2",
volume = "36",
doi = "10.1080/01495739.2013.764795"
}

Kuzmanović, V., Savić, L.,& Mladenović, N.. (2013). Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams. in Journal of Thermal Stresses, 36(2), 112-134.
https://doi.org/10.1080/01495739.2013.764795

Kuzmanović V, Savić L, Mladenović N. Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams. in Journal of Thermal Stresses. 2013;36(2):112-134.
doi:10.1080/01495739.2013.764795 .

Kuzmanović, Vladan, Savić, Ljubodrag, Mladenović, Nikola, "Computation of Thermal-Stresses and Contraction Joint Distance of RCC Dams" in Journal of Thermal Stresses, 36, no. 2 (2013):112-134,
https://doi.org/10.1080/01495739.2013.764795 . .

TY  - JOUR
AU  - Kolarević, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2013
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/504
AB  - Complex flow pattern occurring in a circular conduit bend with supercritical flow is analyzed. The research was done by a scale (physical hydraulic) model, and a numerical model developed in ANSYS (Fluent) surrounding. The results obtained by physical (scale) and numerical models are presented, with comments and recommendations for their application. Simple empirical relationships were developed, describing the effects of the bend curvature, bend deflection angle and approaching flow conditions (depth and Froude number upstream from the bend) on the considered flow.
AB  - Analizirano je složeno strujanje koje nastaje u krivini kružnog provodnika pri burnom toku. Ispitivanja su urađena na hidrauličkom fizičkom modelu, kao i na numeričkom modelu, zasnovanom na programskom paketu ANSYS (Fluent). Prikazani su rezultati dobijeni na pomenuta dva modela, sa komentarima i preporukama za njihovu primenu. Predložene su jednostavne zavisnosti kojima se opisuje uticaj zakrivljenosti, skretnog ugla i prilaznih uslova tečenja (dubina i Frudov broj uzvodno od krivine) na razmatrano tečenje.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Supercritical flow in circular-conduit bends
T1  - Burno tečenje u krivini provodnika kružnog poprečnog preseka
EP  - 137
IS  - 1-3
SP  - 123
VL  - 45
UR  - https://hdl.handle.net/21.15107/rcub_grafar_504
ER  - 

@article{
author = "Kolarević, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
year = "2013",
abstract = "Complex flow pattern occurring in a circular conduit bend with supercritical flow is analyzed. The research was done by a scale (physical hydraulic) model, and a numerical model developed in ANSYS (Fluent) surrounding. The results obtained by physical (scale) and numerical models are presented, with comments and recommendations for their application. Simple empirical relationships were developed, describing the effects of the bend curvature, bend deflection angle and approaching flow conditions (depth and Froude number upstream from the bend) on the considered flow., Analizirano je složeno strujanje koje nastaje u krivini kružnog provodnika pri burnom toku. Ispitivanja su urađena na hidrauličkom fizičkom modelu, kao i na numeričkom modelu, zasnovanom na programskom paketu ANSYS (Fluent). Prikazani su rezultati dobijeni na pomenuta dva modela, sa komentarima i preporukama za njihovu primenu. Predložene su jednostavne zavisnosti kojima se opisuje uticaj zakrivljenosti, skretnog ugla i prilaznih uslova tečenja (dubina i Frudov broj uzvodno od krivine) na razmatrano tečenje.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Supercritical flow in circular-conduit bends, Burno tečenje u krivini provodnika kružnog poprečnog preseka",
pages = "137-123",
number = "1-3",
volume = "45",
url = "https://hdl.handle.net/21.15107/rcub_grafar_504"
}

Kolarević, M., Savić, L., Kapor, R.,& Mladenović, N.. (2013). Supercritical flow in circular-conduit bends. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 45(1-3), 123-137.
https://hdl.handle.net/21.15107/rcub_grafar_504

Kolarević M, Savić L, Kapor R, Mladenović N. Supercritical flow in circular-conduit bends. in Vodoprivreda. 2013;45(1-3):123-137.
https://hdl.handle.net/21.15107/rcub_grafar_504 .

Kolarević, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Supercritical flow in circular-conduit bends" in Vodoprivreda, 45, no. 1-3 (2013):123-137,
https://hdl.handle.net/21.15107/rcub_grafar_504 .

TY  - JOUR
AU  - Kolarević, Milena
AU  - Savić, Ljubodrag
AU  - Kapor, Radomir
AU  - Mladenović, Nikola
PY  - 2013
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/494
AB  - In this paper the energy loss in a circular conduit bend with supercritical flow is analyzed. Based on the test results obtained by a scale model, the energy-loss coefficient has been determined. Simple empirical relationships were developed, describing the effects of the bend curvature and bend deflection angle on the energy losses. Since no expressions for supercritical flow bend energy-loss coefficient exist, proposed empirical relationships have been compared with expressions relating to pressurized flow.
AB  - U radu su analizirani gubici energije u krivini koji nastaju pri burnom tečenju u provodniku kružnog poprečnog preseka. Urađena su hidraulička modelska ispitivanja, na osnovu kojih su određeni koeficijenti gubitka energije. Predloženi su izrazi za koeficijent gubitka u zavisnosti od karakteristika krivine (skretnog ugla i zakrivljenosti). S obzirom da u literaturi ne postoje izrazi kojima se opisuje ovakav gubitak energije u krivini, predložene zavisnosti su upoređene sa izrazi a ko i se odnose na tečenje pod pritiskom. Na kraju rada su date preporuke i zaključci.
PB  - Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd
T2  - Vodoprivreda
T1  - Energy loss in a circular-conduit bends with supercritical flow
T1  - Gubitak energije u krivini kružnog provodnika pri burnom tečenju
EP  - 201
IS  - 4-6
SP  - 193
VL  - 45
UR  - https://hdl.handle.net/21.15107/rcub_grafar_494
ER  - 

@article{
author = "Kolarević, Milena and Savić, Ljubodrag and Kapor, Radomir and Mladenović, Nikola",
year = "2013",
abstract = "In this paper the energy loss in a circular conduit bend with supercritical flow is analyzed. Based on the test results obtained by a scale model, the energy-loss coefficient has been determined. Simple empirical relationships were developed, describing the effects of the bend curvature and bend deflection angle on the energy losses. Since no expressions for supercritical flow bend energy-loss coefficient exist, proposed empirical relationships have been compared with expressions relating to pressurized flow., U radu su analizirani gubici energije u krivini koji nastaju pri burnom tečenju u provodniku kružnog poprečnog preseka. Urađena su hidraulička modelska ispitivanja, na osnovu kojih su određeni koeficijenti gubitka energije. Predloženi su izrazi za koeficijent gubitka u zavisnosti od karakteristika krivine (skretnog ugla i zakrivljenosti). S obzirom da u literaturi ne postoje izrazi kojima se opisuje ovakav gubitak energije u krivini, predložene zavisnosti su upoređene sa izrazi a ko i se odnose na tečenje pod pritiskom. Na kraju rada su date preporuke i zaključci.",
publisher = "Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd",
journal = "Vodoprivreda",
title = "Energy loss in a circular-conduit bends with supercritical flow, Gubitak energije u krivini kružnog provodnika pri burnom tečenju",
pages = "201-193",
number = "4-6",
volume = "45",
url = "https://hdl.handle.net/21.15107/rcub_grafar_494"
}

Kolarević, M., Savić, L., Kapor, R.,& Mladenović, N.. (2013). Energy loss in a circular-conduit bends with supercritical flow. in Vodoprivreda
Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd., 45(4-6), 193-201.
https://hdl.handle.net/21.15107/rcub_grafar_494

Kolarević M, Savić L, Kapor R, Mladenović N. Energy loss in a circular-conduit bends with supercritical flow. in Vodoprivreda. 2013;45(4-6):193-201.
https://hdl.handle.net/21.15107/rcub_grafar_494 .

Kolarević, Milena, Savić, Ljubodrag, Kapor, Radomir, Mladenović, Nikola, "Energy loss in a circular-conduit bends with supercritical flow" in Vodoprivreda, 45, no. 4-6 (2013):193-201,
https://hdl.handle.net/21.15107/rcub_grafar_494 .