Wave simulation for the poroelastic wave equations by the multiscale method
文献类型：期刊论文
| 作者 | Zhang WenSheng2 ; Zheng Hui1,2
|
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2019-06-01 |
| 卷号 | 62期号:6页码:2176-2187 |
| 关键词 | Poroelastic wave equations Inhomogeneous media Wave simulation Multiscale method PML absorbing boundary |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2019M0021 |
| 英文摘要 | In this paper, a multiscale method of wave simulation for solving two-dimensional poroelastic wave equations numerically is developed. The multiscale method allows us to apply coarser grids in computations while the information of physical parameter variations in small scale still can be captured. In this paper, the theoretical method and algorithm of the multiscale method are expounded in detail. The corresponding computational schemes are also derived. The basic idea is to construct two sets of meshes, i. e. , coarse grids and fine grids. The computations for wavefield updating on coarse grids are implemented based on the finite volume method while the multiscale basis functions are computed on fine grids with the finite element method by solving a local problem. Numerical computations with the perfectly matched layer (PML) absorbing boundary conditions are implemented for a poroelastic model with randomly distributed scatterers and the numerical results verify the correctness and effectiveness of the method and algorithm in this paper. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000470821500016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/34963]  |
| 专题 | 计算数学与科学工程计算研究所 |
| 通讯作者 | Zhang WenSheng |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Sch Math & Stat, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math & Sci Engn Comp, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang WenSheng,Zheng Hui. Wave simulation for the poroelastic wave equations by the multiscale method[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(6):2176-2187. |
| APA | Zhang WenSheng,&Zheng Hui.(2019).Wave simulation for the poroelastic wave equations by the multiscale method.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(6),2176-2187. |
| MLA | Zhang WenSheng,et al."Wave simulation for the poroelastic wave equations by the multiscale method".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.6(2019):2176-2187. |
入库方式： OAI收割
来源：数学与系统科学研究院
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