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Ribeiro de Lima L. M., Mangiavacchi N., Pontes J., Soares, C. B. P
Many impacts associated to environmental flows strongly depend on the depth of the aquatic body, such as thermal and hydraulic stratifications, which can lead to formation of layers with different concentrations of oxygen and nutrients. To simulate such problems numerically, for many applications, the most efficient approach is a laterally averaged model (2db), rather than a 3d approach. This paper presents a laterally averaged Finite Element model applied to environmental flow simulations and temperature/pollutant transport to predict effects of stratification, in the context of hydroelectric reservoirs. The work includes the development of computational tools for terrain data manipulation and mesh generation. A validation procedure against experimental results is shown, as well as a numerical simulation of an environmental flow
laterally averaged 2d model, thermal stratification, environmental flows, Finite Element Method.
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