Претраживање
Приказ резултата 1-10 од 21
Uticajni činioci na rečnim ušćima sa izdignutim dnom pritoke / Controls at river confluences with discordant beds
(Savez građevinskih inženjera Srbije - Beograd, 2011)
U ovom radu se pomoću modela prostornog tečenja ispituje uticaj četiri izabrana činioca na hidrodinamiku ušća sa izdignutim dnom pritoke. To su: ugao uliva 'alfa', odnos sila inercije reke i pritoke MR, odnos [irina korita ...
Effect of bed elevation discordance in the main river on the confluence hydrodynamics in 90o straight-channels’ confluences
(CRC Press, Taylor & Francis Group, 2014)
A role of the difference in bed elevations in the main-river (ΔzMR) at its entrance to a 90º straight-channels' confluence is studied numerically using a 3D finite-volume model. Three characteristic hydrological scenarios ...
On the effect of bed elevation discordance in confluences with unequal channel widths
(EGE University, Izmir, Turkey, 2018)
The paper studies the effect of bed elevation discordance on the hydrodynamics in fixed-bed open channel
confluences where the tributary channel is narrower than the main channel and where the flow is subcritical. ...
Comparative analysis of the results obtained with 3d orthogonal and non-orthogonal grids in the 3d-flow models: Part 1 / Uporedna analiza rezultata dobijenih primenom ortogonalnih ineortogonalnih mreža u modelima prostornog tečenja - deo l
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2006)
Application of orthogonal and non-orthogonal grids in numerical models of the three-dimensional flow is considered. A river confluence is chosen as an example due to strong three-dimensional flow effects occurring at the ...
Analytical models of confluences: A survey and models' assessment / Pregled i ocena analitičkih modela ušća
(Jugoslovensko društvo za odvodnjavanje i navodnjavanje, Beograd, 2011)
Assumptions upon which development of 1D models of free-surface flow rest are not valid at open-channel junctions. Thus, the 1D flow equations cannot be used for calculation of upstream flow depths, or water levels in a ...
Хидрауличка анализа речних ушћа применом нумеричких модела / Numerical investigation of the river confluence hydrodynamics
(2010)
У овој дисертацији ce разматра хидраулика ушћа са издигнутим дном притоке. Иако су
теренска мерења још пре двадесет пет година показала да je на ушћима река са покретним дном
појава издигнутог дна корита једног или оба ...
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. ...
Application of 3D numerical models in confluence hydrodynamics modelling
(University of Illinois at Urbana-Champaign, 2012)
In this paper performance of the SSIIM2 model (3D finite-volume model with the k-ε-type turbulence model closure) in confluence hydrodynamics modelling is assessed using the published experimental ...
Numerical simulation of the three-dimensional flow at the confluence of the Sava and Danube Rivers
(Research Publishing Services, 2006)
In this paper, the confluence hydrodynamics at the mouth of the Sava and Danube Rivers in
the city of Belgrade is analysed by means of the three-dimensional numerical model. The
confluence offers excellent possibilities ...