TY - JOUR
T1 - An Adaptive Modal Discontinuous Galerkin Finite Element Parallel Method Using Unsplit Multi-Axial Perfectly Matched Layer for Seismic Wave Modeling
AU - Xu , Yang
AU - Chen , Xiaofei
AU - Zhang , Wei
AU - Pan , Xiao
JO - Communications in Computational Physics
VL - 4
SP - 1083
EP - 1113
PY - 2022
DA - 2022/03
SN - 31
DO - http://doi.org/10.4208/cicp.OA-2021-0118
UR - https://global-sci.org/intro/article_detail/cicp/20377.html
KW - Multi-axial PML, adaptive, parallel computing, computational seismology.
AB - <p style="text-align: justify;">The discontinuous Galerkin finite element method (DG-FEM) is a high-precision numerical simulation method widely used in various disciplines. In this paper, we derive the auxiliary ordinary differential equation complex frequency-shifted
multi-axial perfectly matched layer (AODE CFS-MPML) in an unsplit format and combine it with any high-order adaptive DG-FEM based on an unstructured mesh to simulate seismic wave propagation. To improve the computational efficiency, we implement
Message Passing Interface (MPI) parallelization for the simulation. Comparisons of
the numerical simulation results with the analytical solutions verify the accuracy and
effectiveness of our method. The results of numerical experiments also confirm the
stability and effectiveness of the AODE CFS-MPML.</p>