Parallel numerical simulation of the thermal convection in the Earth's outer core on the cubed-sphere

doi:10.1093/gji/ggx125

	Parallel numerical simulation of the thermal convection in the Earth's outer core on the cubed-sphere
	Yin, Liang 1; Yang, Chao 2,3; Ma, Shi-Zhuang 1; Huang, Ji-Zu4 ; Cai, Ying 2
	2017-06-01
发表期刊	GEOPHYSICAL JOURNAL INTERNATIONAL
ISSN	0956-540X
卷号	209 期号:3 页码:1934-1954
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.
关键词	Core Dynamo: theories and simulations Non-linear differential equations Numerical solutions
DOI	10.1093/gji/ggx125
语种	英语
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
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000408374300042
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/26483
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.