SIMULATION OF SCOUR AND DEPOSITION IN CHANNEL CONFLUENCES BY FINITE-VOLUME METHOD

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BAGHLANI A.A.H.

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Journal: Journal of Water Resources Engineering Year:2011 | Volume:4 | Issue:10 Page(s): 1-12

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Title

SIMULATION OF SCOUR AND DEPOSITION IN CHANNEL CONFLUENCES BY FINITE-VOLUME METHOD

Author(s)

BAGHLANI A.A.H. | Issue Writer Certificate

Keywords

CHANNEL CONFLUENCEQ2

BED-LOAD TRANSPORTQ2

FINITE-VOLUME METHODQ2

SHALLOW WATER EQUATIONSQ2

Abstract

In this paper, a numerical model has been presented to investigate the scour and deposition in CHANNEL CONFLUENCEs. FINITE-VOLUME METHOD, which is an acceptable and effective approach, has been used to discretize the governing equations. The effect of turbulence has been considered in the model via and eddy-viscosity approach. The continuity and momentum equations and the sediment continuity equation have been coupled by a fully-coupled method. It is assumed that the flow is two-dimensional and only the bed load transport has been considered in the model. The sediment transport formula of Grass has been utilized to estimate the rate of bed load transport. To evaluate the numerical flux at the cell interface, the method of HLLC has been employed. A 90o CHANNEL CONFLUENCE has been simulated by the model and the results have been compared with experimental data, which show satisfactory agreement. The model can successfully predict the scour hole, the formation of bar at mainstream channel after the confluence and the penetration of scour hole into the tributary channel. To accomplish a quantitative comparison, the maximum scour depth, maximum height of the bar and maximum penetration of scour hole into tributary channel, have been compared with those of experiments.

Cites

NUMERICAL SIMULATION OF JUNCTION ANGLE AND DISCHARGE RATIO ON SEPARATION ZONE DIMENSIONS AT OPEN JUNCTION CHANNELS

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APA: Copy

BAGHLANI, A.A.H.. (2011). SIMULATION OF SCOUR AND DEPOSITION IN CHANNEL CONFLUENCES BY FINITE-VOLUME METHOD. WATER ENGINEERING, 4(10), 1-12. SID. https://sid.ir/paper/169622/en

Vancouver: Copy

BAGHLANI A.A.H.. SIMULATION OF SCOUR AND DEPOSITION IN CHANNEL CONFLUENCES BY FINITE-VOLUME METHOD. WATER ENGINEERING[Internet]. 2011;4(10):1-12. Available from: https://sid.ir/paper/169622/en

IEEE: Copy

A.A.H. BAGHLANI, “SIMULATION OF SCOUR AND DEPOSITION IN CHANNEL CONFLUENCES BY FINITE-VOLUME METHOD,” WATER ENGINEERING, vol. 4, no. 10, pp. 1–12, 2011, [Online]. Available: https://sid.ir/paper/169622/en

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