MULTILEVEL ADAPTIVE MESH MODELING FOR WAVE PROPAGATION IN LAYER MEDIA

摘要

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.