Parallel exponential time differencing methods for geophysical flow simulations

doi:10.1016/j.cma.2021.114151

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	Parallel exponential time differencing methods for geophysical flow simulations
	Lan, Rihui 1; Leng, Wei 2; Wang, Zhu 1; Ju, Lili 1; Gunzburger, Max 3
	2021-12-15
发表期刊	COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
ISSN	0045-7825
卷号	387 页码:24
摘要	Two ocean models are considered for geophysical flow simulations: the multi-layer shallow water equations and the multi-layer primitive equations. For the former, we investigate the parallel performance of exponential time differencing (ETD) methods, including exponential Rosenbrock-Euler, ETD2wave, and B-ETD2wave. For the latter, we take advantage of the splitting of barotropic and baroclinic modes and propose a new two-level method in which an ETD method is applied to solve the fast barotropic mode. These methods could improve the computational efficiency of numerical simulations because ETD methods allow for much larger time step sizes than traditional explicit time-stepping techniques that are commonly used in existing computational ocean models. Several standard benchmark tests for ocean modeling are performed and comparison of the numerical results demonstrates a great potential of applying the parallel ETD methods for simulating real-world geophysical flows. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Shallow water equations Primitive equations Exponential time differencing Parallel computing Barotropic/baroclinic splitting
DOI	10.1016/j.cma.2021.114151
收录类别	SCI
语种	英语
资助项目	U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research through Earth and Environmental System Modeling and Scientific Discovery through Advanced Computing programs[DE-SC0020270] ; U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research through Earth and Environmental System Modeling and Scientific Discovery through Advanced Computing programs[DE-SC0020418] ; National Science Foundation[DMS-1818438] ; National Science Foundation[DMS-2109633] ; National Energy Research Scientific Computing Center (NERSC) , a U.S. Department of Energy Office of Science User Facility[DE-AC02-05CH11231]
WOS研究方向	Engineering ; Mathematics ; Mechanics
WOS类目	Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications ; Mechanics
WOS记录号	WOS:000702651300002
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/59324
专题	中国科学院数学与系统科学研究院
通讯作者	Ju, Lili
作者单位	1.Univ South Carolina, Dept Math, Columbia, SC 29208 USA 2.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China 3.Florida State Univ, Dept Comp Sci, Tallahassee, FL 32306 USA
推荐引用方式 GB/T 7714	Lan, Rihui,Leng, Wei,Wang, Zhu,et al. Parallel exponential time differencing methods for geophysical flow simulations[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2021,387:24.
APA	Lan, Rihui,Leng, Wei,Wang, Zhu,Ju, Lili,&Gunzburger, Max.(2021).Parallel exponential time differencing methods for geophysical flow simulations.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,387,24.
MLA	Lan, Rihui,et al."Parallel exponential time differencing methods for geophysical flow simulations".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 387(2021):24.