globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016MS000888
Scopus记录号: 2-s2.0-85013422809
论文题名:
A Godunov-type finite-volume solver for nonhydrostatic Euler equations with a time-splitting approach
作者: Nazari F; , Nair R; D
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期:1
起始页码: 465
结束页码: 481
语种: 英语
英文关键词: Benchmarking ; Computational efficiency ; Repair ; Runge Kutta methods ; Finite volume model ; Numerical flux ; Piece-wise ; Time integration ; Time-stepping ; Euler equations ; benchmarking ; comparative study ; equation ; Eulerian analysis ; finite volume method ; numerical method ; reconstruction ; time series analysis
英文摘要: A two-dimensional conservative nonhydrostatic (NH) model based on the compressible Euler system has been developed in the Cartesian (x, z) domain. The spatial discretization is based on a Godunov-type finite-volume (FV) method employing dimensionally split fifth-order reconstructions. The model uses the explicit strong stability-preserving Runge-Kutta scheme and a split-explicit method. The time-split approach is generally based on the split-explicit method, where the acoustic modes in the Euler system are solved using small time steps, and the advective modes are treated with larger time steps. However, for the Godunov-type FV method this traditional approach is not trivial for the Euler system of equations. In the present study, a new strategy is proposed by which the Euler system is split into three modes, and a multirate time integration is performed. The computational efficiency of the split scheme is compared with the explicit one using the FV model with various NH benchmark test cases. © 2017. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75820
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: Institute for Mathematics Applied to Geosciences, National Center for Atmospheric Research, Boulder, CO, United States; Advanced Study Program, National Center for Atmospheric Research, Boulder, CO, United States

Recommended Citation:
Nazari F,, Nair R,D. A Godunov-type finite-volume solver for nonhydrostatic Euler equations with a time-splitting approach[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(1)
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