NUMERICAL MODEL OF FLOW AND SUSPENDED SEDIMENT TRANSPORT IN THE RESERVOIR OF ROCK-FILL DAMS

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NEJATI A.; HEYDARI M.; SADEGHIAN J.; DANESHFARAZ R.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2018 | Volume:14 | Issue:2 Page(s): 36-46

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Title

NUMERICAL MODEL OF FLOW AND SUSPENDED SEDIMENT TRANSPORT IN THE RESERVOIR OF ROCK-FILL DAMS

Author(s)

NEJATI A. | HEYDARI M. | SADEGHIAN J. | DANESHFARAZ R. | Issue Writer Certificate

Keywords

RESERVOIR OF ROCK-FILL DAMSQ1

UNSTEADY FLOWQ2

CONVECTION DIFFUSION EQUATIONQ1

FINITE VOLUME METHODQ2

Abstract

Building non-core rock-fill dams is amongst the most effective methods of controlling floods. In flood events the input-flow of such dams typically contains a considerable amount of sediments. This underscores the need to study the flow behavior and sediment concentrations so that one could identify the amount of passing and depositing sediments and decide on the management practices all of which have been taken into account in the present research. First, on the basis of numerical solution of Saint-Venant equations, the flow characteristics (e.g. depth and velocity) were calculated using FINITE VOLUME METHOD with a completely implicit method. Then the concentration of the sediments at different points of the reservoir was determined using discretization of the CONVECTION DIFFUSION EQUATION. The results of the experiments conducted on reservoirs of rock-fill dams in the hydraulic laboratory of Bu Ali Sina University, Hamedan, were then employed to assess the functioning and validation of the mathematical model of flow simulator and sediment concentration. Comparing measurement data of the sediment concentration and the calculations conducted in eight sections and three height layers of 5, 10 and 15 cm in the reservoir of rock-fill dam, the mean value of the relative error of sediment concentration was found to be 9.17 percent, indication a good enough correspondence between the output of the mathematical simulator and the value measured in the experimental model.

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APA: Copy

NEJATI, A., HEYDARI, M., SADEGHIAN, J., & DANESHFARAZ, R.. (2018). NUMERICAL MODEL OF FLOW AND SUSPENDED SEDIMENT TRANSPORT IN THE RESERVOIR OF ROCK-FILL DAMS. IRAN-WATER RESOURCES RESEARCH, 14(2 ), 36-46. SID. https://sid.ir/paper/100347/en

Vancouver: Copy

NEJATI A., HEYDARI M., SADEGHIAN J., DANESHFARAZ R.. NUMERICAL MODEL OF FLOW AND SUSPENDED SEDIMENT TRANSPORT IN THE RESERVOIR OF ROCK-FILL DAMS. IRAN-WATER RESOURCES RESEARCH[Internet]. 2018;14(2 ):36-46. Available from: https://sid.ir/paper/100347/en

IEEE: Copy

A. NEJATI, M. HEYDARI, J. SADEGHIAN, and R. DANESHFARAZ, “NUMERICAL MODEL OF FLOW AND SUSPENDED SEDIMENT TRANSPORT IN THE RESERVOIR OF ROCK-FILL DAMS,” IRAN-WATER RESOURCES RESEARCH, vol. 14, no. 2 , pp. 36–46, 2018, [Online]. Available: https://sid.ir/paper/100347/en

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