期刊
COMPUTERS & FLUIDS
卷 179, 期 -, 页码 394-421出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compfluid.2018.11.014
关键词
Central-upwind; High-resolution meshes; Turbulence; Scalable wall functions; Shallow flow
资金
- DAAD (German Academic Exchange Service) [57129429]
In this paper, the Reynolds-averaged Navier Stokes equations supplemented by the algebraic stress model are solved using the central-upwind scheme for simulating 2D turbulent shallow flows. The model is of spatially and temporally second-order accurate. To increase the accuracy, high-resolution meshes up to 3.4 million cells (6.8 million edges) are used. Consequently, a strategy combining the hydrostatic and topography reconstructions and the scalable wall functions - is proposed to accurately simulate wet-dry phenomena near the interfaces (moving boundary geometries) thus ensuring a proper calculation for the turbulence properties. This strategy has been proven to be accurate and to not deteriorate the results for such very fine meshes thus giving flexibility to users in generating meshes. (C) 2018 Elsevier Ltd. All rights reserved.
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