An Adaptive Modal Discontinuous Galerkin Finite Element Parallel Method Using Unsplit Multi-Axial Perfectly Matched Layer for Seismic Wave Modeling  

作　　者：Yang Xu Xiaofei Chen Wei Zhang Xiao Pan 

机构地区：[1]Department of Astronautical Science and Mechanics,Harbin Institute of Technology,Harbin,150001,China [2]Shenzhen Key Laboratory of Deep Offshore Oil and Gas Exploration Technology,Southern University of Science and Technology,Shenzhen,518055,China [3]Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China [4]Chengdu University of Technology,Chengdu,610059,China

出　　处：《Communications in Computational Physics》2022年第4期1083-1113,共31页计算物理通讯（英文）

基　　金：Project 41790465 supported by the National Natural Science Foundation of China;Project U1901602 supported by the National Natural Science Foundation of China,the Shenzhen Key Laboratory of Deep Offshore Oil and Gas Exploration Technology(Grant No.ZDSYS20190902093007855);the Shenzhen Science and Technology Program(Grant No.KQTD20170810111725321).

摘　　要：The discontinuous Galerkin finite element method(DG-FEM)is a highprecision numerical simulation method widely used in various disciplines.In this paper,we derive the auxiliary ordinary differential equation complex frequency-shifted multi-axial perfectlymatched layer(AODE CFS-MPML)in an unsplit format and combine it with any high-order adaptive DG-FEMbased on an unstructuredmesh to simulate seismicwave 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.

关 键 词：Multi-axial PML ADAPTIVE parallel computing computational seismology 

分 类 号：O17[理学—数学]