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题名: The HLLD Riemann solver based on magnetic field decomposition method for the numerical simulation of magneto-hydrodynamics
作者: Guo, Xiaocheng; Florinski, Vladimir; Wang, Chi
作者部门: 空间科学部
通讯作者: Guo, XC (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China.
关键词: HLLD ; MHD ; Riemann solver ; Numerical simulation ; Magnetosphere
刊名: JOURNAL OF COMPUTATIONAL PHYSICS
ISSN号: 0021-9991
出版日期: 2016
卷号: 327, 页码:543-552
收录类别: SCI
项目资助者: NNSFC [41674146, 41231067] ; 973 program [2012CB825602] ; Specialized Research Fund for State Key Laboratories of China ; NSF [DMS-1361219]
英文摘要: By splitting magnetic field into two components (internal plus external), we derived an extended formulation of the HLLD Riemann solver for numerical simulation of magneto-hydrodynamics (MHD). This new solver is backward compatible with the standard HLLD Riemann solver when the external component of the magnetic field is zero. Moreover, the solver is more robust than the standard HLLD solver in applications to low plasma beta (the ratio between thermal and magnetic pressures) cases, where the thermal pressure may become negative from subtracting the kinetic and large magnetic energy from the large total energy density in a Godunov type numerical scheme. Our numerical tests show that the extended HLLD solver works well for the cases of magnetic field decomposition, and maintains high resolution similar to the standard HLLD. (C) 2016 Elsevier Inc. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5636
Appears in Collections:空间科学部_期刊论文

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文件名: 2016327543-552.pdf
格式: Adobe PDF
文件名: 2016327543-552.pdf
格式: Adobe PDF
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