Претраживање
Приказ резултата 11-20 од 21
Uporedna analiza rezultata dobijenih primenom ortogonalnih i neortogonalnih mreža u modelima prostornog tečenja – deo l / Comparative Analysis of the Results Obtained with 3D Orthogonal And Non-Orthogonal Grids in the 3D-Flow Models – Part 1
(Srpsko društvo za odvodnjavanje i navodnjavanje, 2006)
Razmatra se primena ortogonalnih i neortogonalnih mreža u modelima prostornog tečenja. Za analizu je izabrano rečno ušće, jer je na ušću tečenje izrazito prostorno, a korito ima složen oblik. Na kvalitet rezultata dobijenih ...
Effect of bed elevation discordance on momentum-flux from tributary flow and parameter values in 1d confluence models / Uticaj podvodnih kaskada na raspored protoka količine kretanja na ušću i vrednosti parametara u linijskim modelima ušća
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2016)
Bathymetric surveys in confluences of both alluvial and mountaneous rivers have shown that a bed step at a tributary entrance to the confluence is a common morphological feature and that it may also develop in the main-river. ...
Numerical simulation of 3D flow in right-angled confluences with bed elevation discordance in both converging channels
(Elsevier, 2016)
The paper studies a combined effect of bed steps (BS) in both converging channels on the 3D flow in a confluence with α = 90o. Nine combinations of bed elevation discordance ratio values in the two channels are analysed. ...
О утицају подводних каскада на неке хидродинамичке показатеље течења на речним ушћима / Effects of a bed step on some hydrodynamic properties of flow in river confluences
(Univerzitet u Beogradu – Građevinski fakultet, 2015)
На речним ушћима се услед исталожавања крупног наноса који пристиже коритом притоке
стварају подводне каскаде због којих је дно притоке издигнуто изнад дна реке. У раду се помоћу модела просторног течења испитује како ...
Просторно течење на речним ушћима (утицајни чиниоци) / Controls of three-dimensional flow at river confluences
(Задужбина андрејевић / Zadužbina Andrejević, 2013)
Монографија се бави изучавањем хидраулике ушћа великих алувијал них водотока и ушћа у велике алувијалне водотоке. Течење на овак вим ушћима је изразито мирно (Fr < 0,3), а нанос који пристиже са узвод них деоница ...
Controls at river confluences with discordant beds / Uticajni činioci na rečnim ušćima sa izdignutim dnom pritoke
(Savez građevinskih inženjera Srbije, Beograd, 2012)
The role of four parameters that are controlling river confluence hydrodynamics at discordant beds confluences is investigated using 3D numerical model. These are: the junction angle α, the momentum-flux ratio between the ...
Effects of bed material grain-size distribution on bed morphology at a river confluence - numerical study
(EGU (European Geophysical Union), 2017)
River confluences play an important role in the drainage of a catchment and transport of sediments and pollutants within this area. Riverbed morphology at these important nodes of the river drainage network might be very ...
Hydrodynamics of 90o concordant beds’ confluences of straight-channels with unequal channel widths
(EGU (European Geophysical Union), 2017)
With the exception of confluences of large alluvial rivers, tributary channel is usually narrower that the channel of the main-river. hydrodynamics of confluences of equal width channels has been thoroughly studied using ...
Can a 3D-Numerical Model be a Substitute to a Physical Model in Estimating Parameters of 1D-Confluence Models?
(Universidade do Porto, Faculdade de Engenharia, 2014)
A possibility of using a 3D-numerical model instead of a more expensive physical one for estimation of parameters in 1D-confluence models is considered. A set of existing experimental data from 90º confluence is used for ...
Numerical Simulation of 3D Flow at Right-angled Confuence with and without Upstream Planform Curvature
(Chemical Industry Press, Beijing, 2010)
This paper aims at studying the effect of upstream planform curvature on the flow in the confluence hydrodynamics zone. To do this, a 3D numerical model is used for simulation of flow at right-angled
confluences with ...