A three dimensional MHD model of the Earth’s magnetosphere
A three dimensional MHD model of the Earth’s magnetosphere
复制标题
地球磁层的三维 MHD 模型
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
J. Dawson
中科院分区：
文献类型：
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作者：
C. Wu;R. Walker;J. Dawson
我们模拟了太阳风等离子体撞击磁偶极子时产生的稳态磁层构型。在我们的计算中，用大型程序自洽地求解MHD方程，该程序使用Rusanov方法产生了磁层磁场和等离子体的三维模型。这一模拟中假设行星际磁场为零，再现了许多观测到的磁层特征，包括弓激波、磁层顶和等离子体片。特别是，计算出的磁场与平静时间的观测结果是一致的。模拟的磁层中的电流与半经验磁场模型中的电流非常相似。
We have simulated the steady state magnetospheric configuration which results when solar wind plasma impinges on a magnetic dipole. In our calculation, the MHD equations were solved self-consistently by a large scale code which employs Rusanov’s method to produce a three-dimensional model of the magnetospheric fields and plasma. This simulation, in which the interplanetary magnetic field was assumed to be zero, reproduced many of the observed magnetospheric features including the bow shock, magnetopause and plasma sheet. In particular, the calculated magnetic field is consistent with quiet time observations. The currents in the simulated magnetosphere are remarkably similar to those from semi-empirical magnetic field models.