Computational multiscale methods for first-order wave equation using mixed CEM-GMsFEM
Publication in refereed journal

香港中文大學研究人員
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摘要In this paper, we consider a pressure-velocity formulation of the heterogeneous wave equation and employ the constraint energy minimizing generalized multiscale finite element method (CEM-GMsFEM) to solve this problem. The proposed method provides a flexible framework to construct crucial multiscale basis functions for approximating the pressure and velocity. These basis functions are constructed by solving a class of local auxiliary optimization problems over the eigenspaces that contain local information on the heterogeneity. Techniques of oversampling are adapted to enhance the computational performance. The first-order convergence of the proposed method is proved and illustrated by several numerical tests.
著者Eric Chung, Sai-Mang Pun
期刊名稱Journal of Computational Physics
出版年份2020
月份5
卷號409
出版社Elsevier
文章號碼109359
國際標準期刊號0021-9991
電子國際標準期刊號1090-2716
語言美式英語

上次更新時間 2020-14-09 於 00:15