Abstract
The governing equation for sediment pollutions was derived based on the turbulent diffusion of pollutants in shallow lakes. Coupled with shallow water equations, a depth-averaged 2-D flow and water quality model was developed. By means of the conservation law, a proposed differential equation for the change of sediment pollutants was linked to the 2-D equations. Under the framework of the finite volume method, the Osher approximate Riemann solver was employed to solve the equations. An analytical resolution was used to examine the model capabilities. Simulated results matched the exact solutions especially well. As an example, the simulation of CODMn in the Wuli Lake, a part of the Taihu lake, was conducted, which led to reasonable results. This study provides a new approach and a practical tool for the simulation of flow and water quality in shallow lakes.
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Project supported by the National Natural Science Foundation of China (Grant No. 50239093) and Nanjing Construction Commission (Grant No. 20050176).
Biography: JI Yong (1979- ), Male, Master, Lecturer
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Ji, Y., Zhang, J., Yao, Q. et al. Analysis of Water Quality in Shallow Lakes with a Two-Dimensional Flow-Sediment Model. J Hydrodyn 19, 501–508 (2007). https://doi.org/10.1016/S1001-6058(07)60146-2
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DOI: https://doi.org/10.1016/S1001-6058(07)60146-2