Journal
ADVANCES IN WATER RESOURCES
Volume 33, Issue 4, Pages 387-396Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.advwatres.2010.01.005
Keywords
Transient flow; Lattice Boltzmann method; Large eddy simulation; Multi-block grid; Shallow water equations; LABSWE
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A two-dimensional lattice Boltzmann model (LBM) is presented for transient shallow water flows. The model is based on the shallow water equations coupled with the large eddy simulation model. In order to obtain accurate results efficiently, a multi-block lattice scheme is applied at the area where a local finer grid is needed for strong change in physical variables. The model is verified by applying to five cases with transient processes: (a) a tidal wave over steps; (b) a perturbation over a submerged hump; (c) partial dam break flow; (d) circular dam break flow; (e) interaction between a dam break surge and four square cylinders. The objectives of this study are to validate the two-dimensional LBM in transient flow simulation and provide the detailed transient processes in shallow water flows. (C) 2010 Elsevier Ltd. All rights reserved.
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