Global simulation of the solar wind-magnetosphere interaction: The importance of its numerical validity

Global simulation of the solar wind-magnetosphere interaction: The importance of its numerical validity
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太阳风-磁层相互作用的全球模拟:数值有效性的重要性

DOI:
10.1029/ja095ia01p00075
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发表时间:
1990
影响因子:
--
通讯作者:
Tetsuya Sato
Tetsuya Sato
中科院分区:
--
文献类型:
--
作者:
K. Watanabe;Tetsuya Sato

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本文利用新开发的三维高精度MHD模拟程序研究了太阳风与地磁场的全局相互作用,该程序在时间上采用四阶龙格-库塔-吉尔格式,在空间上采用直接有限差分法,其数值误差比常规代码小得多。模拟详细揭示了磁层和弓形激波的形成过程,以及等离子体片的形成过程。结果表明,与传统的理解相反,在理想的 MHD 中,沿着磁层顶不会发生开尔文-亥姆霍兹不稳定性。
This paper examines the global interaction of the solar wind with the geomagnetic field, using a newly developed three-dimensional high-precision MHD simulation code which employs the fourth-order Runge-Kutta-Gill scheme in time and the direct finite-difference method in space, and which allows much less numerical error than the conventional code. The simulation reveals in detail the formation processes of the magnetosphere and the bow shock, as well as the plasma sheet formation process. It is shown that, contrary to the conventional understanding, no Kelvin-Helmholtz instability occurs along the magnetopause in an ideal MHD.
DOI: 10.1029/ja091ia06p06791
发表时间: 1986-06
影响因子: --
作者:
T. Ogino
通讯作者: T. Ogino