Abstract
The largest part of the water control project belongs to the low-head riverbed floodgate project, and its discharge capacity can be accurately determined in design, which can avoid the inundation of the upstream fertile land and at the same time achieve the purpose of reducing the scale of flood discharge structures and saving project investment. In this paper, the influence of different height difference between the dam floor and the upstream and downstream riverbeds on the discharge capacity is studied through the model test of the discharge capacity and its related parameters of the spillway gate of the orifice outflow dam, and the three-dimensional flow field of the discharge flow of the spillway gate is numerically simulated by FLUENT commercial software. The Reynolds equation is closed by using the standard K-ε turbulence numerical model, and the free liquid level is tracked by using the volume of fluid (VOF) method. The tetrahedral unstructured grid is used to divide the grid, and the calculation results of the discharge capacity, flow pattern, water level elevation, velocity field, and pressure field of the floodgate are obtained. Compared with the observation results of the model test, they are in good agreement, which shows that the model used in the numerical simulation is reasonable and the method is correct.
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This study is supported by construction and management of hydropower project open fund of Hubei key laboratory (No.: 2019KSD10).
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YXL and XSS designed research, performed research, analyzed data, and wrote the paper.
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Lu, Y., Sun, X. Study on Water Flow Capacity and Related Parameters of Spillway Gate of Orifice Outflow Dam. Water Conserv Sci Eng 6, 191–200 (2021). https://doi.org/10.1007/s41101-021-00113-0
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DOI: https://doi.org/10.1007/s41101-021-00113-0