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Multilevel adaptive mesh modeling for wave propagation in layered media
TIELIANG MI1 ,
JIANWEI MA1,2 ,
HERVÉ CHAURIS2 ,
HUIZHU YANG1
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1
Institute of Seismic Exploration, School of Aerospace, Tsinghua University, Beijing 100084, China.,
2
Center of Geoscience, Mines ParisTech, 35 rue Saint-Honoré, 77300 Fontainebleau, France.,
JSE 2010, 19(2), 121–139;
Submitted: 30 April 2009 | Accepted: 8 September 2009 | Published: 1 April 2010
© 2010 by the Authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract
In this paper, we apply an adaptive mesh refinement method for numerical modeling of two-dimensional wave propagation in blocky models. A blocky model consists of patches with homogeneous properties. A series of nested-type adaptive meshes of local rectangular finer or finest mesh patches is used to control the solution accuracy at each level. The high-resolution simulation of wave propagation can be obtained effectively from coarser mesh to finer mesh level. Numerical experiments show good performance of the proposed algorithm to obtain fine characteristics of wave propagation (in particular reflected, transmitted, diffracted energy) while avoiding numerical dispersion.
Keywords
adaptive mesh refinement
wave propagation
high-resolution algorithm
absorbing boundary conditions
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