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http://dx.doi.org/10.17820/eri.2020.7.3.218

An Experiment on Flow Simulation Depending on Opening Configuration of Weir Using a Numerical Model  

Kang, Tae Un (JSPS, Kyoto University)
Jang, Chang-Lae (Department of Civil Engineering, Korea National University of Transportation)
Publication Information
Ecology and Resilient Infrastructure / v.7, no.3, 2020 , pp. 218-226 More about this Journal
Abstract
This study investigated that the numerical experiment for analysis on free overtopping flow by a weir of levee type, as the first stage of the development of a numerical technique for prediction methodology based on a numerical model. Using 2-dimensional flow models, Nays2DH, we conducted numerical simulations based on existing experimental data to compare and verify the models. We firstly discussed the numerical reproducibility for the discontinued flow by weir shape, and calibrated the computational flow through preprocessing of channel bed. Further, we carried out and compared the simulations for prediction on the overtopping flow by the number of weir gates. As a result of simulations, we found that the maximum flow velocity of downstream of weir increases when the number of weir gates increases under the same cross sectional area of flow. Through such results, this study could present basic data for hydraulic research to consider the water flow and sediment transport depending on weir operation in the future work.
Keywords
2D flow model; Bed deformation; Numerical simulation; Weir operation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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