Parallel numerical simulation of the thermal convection in the Earth's outer core on the cubed-sphere
文献类型：期刊论文
| 作者 | Yin, Liang1; Yang, Chao2,3; Ma, Shi-Zhuang1; Huang, Ji-Zu4 ; Cai, Ying2
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| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 209期号:3页码:1934-1954 |
| 关键词 | Core Dynamo: theories and simulations Non-linear differential equations Numerical solutions |
| ISSN号 | 0956-540X |
| DOI | 10.1093/gji/ggx125 |
| 英文摘要 | Numerical simulations of the thermal convection in a rotating spherical shell play an important role in dynamo simulations. In this paper, we present a highly scalable parallel solver for the Earth's outer core convection. The solver uses a second-order cell-centred finite volume spatial discretization based on the cubed-sphere grid instead of the traditional latitude-longitude grid to avoid grid singularity and enhance the parallel scalability. A second-order approximate factorization method combined with the Crank-Nicolson scheme is employed for splitting temporal integration. The two resultant sparse linear systems are solved by the Krylov subspace iterative method pre-conditioned with a restricted additive Schwarz pre-conditioner based on the domain decomposition of the cubed-sphere. The numerical results are in good agreement with the benchmark solutions and more accurate than the existing finite volume results. The solvers scale to over 10 000 processor cores with nearly linear scalability on the Sunway TaihuLight supercomputer. |
| 资助项目 | NSF China[41174056] ; NSF China[91530323] ; National Key RD Plan of China[2016YFB0200603] ; Chinese Academy of Sciences[QYZDB-SSW-SYS006] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000408374300042 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/26482]  |
| 专题 | 计算数学与科学工程计算研究所 |
| 通讯作者 | Yang, Chao |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Software, Beijing 100190, Peoples R China 3.Chinese Acad Sci, State Key Lab Comp Sci, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math & Sci Engn Comp, LSEC, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Liang,Yang, Chao,Ma, Shi-Zhuang,et al. Parallel numerical simulation of the thermal convection in the Earth's outer core on the cubed-sphere[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2017,209(3):1934-1954. |
| APA | Yin, Liang,Yang, Chao,Ma, Shi-Zhuang,Huang, Ji-Zu,&Cai, Ying.(2017).Parallel numerical simulation of the thermal convection in the Earth's outer core on the cubed-sphere.GEOPHYSICAL JOURNAL INTERNATIONAL,209(3),1934-1954. |
| MLA | Yin, Liang,et al."Parallel numerical simulation of the thermal convection in the Earth's outer core on the cubed-sphere".GEOPHYSICAL JOURNAL INTERNATIONAL 209.3(2017):1934-1954. |
入库方式： OAI收割
来源：数学与系统科学研究院
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