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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. ...
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 ...
Numerical simulation of 3D flow in right-angled confluences with bed elevation discordance in both converging channels
(Elsevier Ltd, 2016)
The paper studies a combined effect of bed steps (BS) in both converging channels on the 3D flow in a confluence with alpha = 90 degrees. Nine combinations of bed elevation discordance ratio values in the two channels are ...
Numerical study of 3D flow at right-angled confluences with and without upstream planform curvature
(IWA Publishing, 2013)
The purpose of this paper is to study the individual and combined effect of upstream planform curvature and difference in bed elevations at the tributary entrance to the confluence on the flow in the confluence hydrodynamics ...
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. ...
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 ...