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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 7 - WATER RESOURCES AND HYDROINFORMATICS : A LBM Appcroach for Wet-dry Boundary Treatment
A LBM Appcroach for Wet-dry Boundary Treatment
Author : Haifei Liu, Yu Ding and Yong Peng
Based on the lattice Boltzmann scheme for 1D shallow water equations, this study presents an approach for the wet-dry boundary condition. In order to build up a relation between the dry bed cell and its neighboring wet cell, the Chapman-Enskog expansion and the Taylor expansion are used. This approach has several advantages: no spurious assumption of a thin water film, no nonphysical linear extrapolation of water depth or velocity, and no violation of local dependence. A typical test of long wave i n a container with parabolic bed topography and bed friction is used to test the scheme. The numerical results agree well with the analytical solution, demonstrating the effectiveness and accuracy of the new approach.
File Size : 517,580 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 19/07/2016
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