Hybrid simulation of space plasmas: Models with massless fluid representation of electrons. I. Collisionless shocks
Hybrid simulation of space plasmas: Models with massless fluid representation of electrons. I. Collisionless shocks
复制标题
空间等离子体的混合模拟：具有电子无质量流体表示的模型。
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
D. S. Filippychev
中科院分区：
文献类型：
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作者：
D. S. Filippychev
这是一篇关于空间等离子体低频过程混合模拟研究的综述。我们讨论了在推导混合模型时所使用的主要近似方法：离子的粒子表示；电子的无质量流体表示。还考虑了用于实现该模型的主要数值格式：广义欧姆定律格式、预估 - 校正格式、使用鲍里斯（Boris）方法和龙格 - 库塔（Runge - Kutta）方法计算场的格式。文章回顾了无碰撞激波模拟的相关文献：具有各向异性（磁镜和离子回旋）不稳定性的准垂直激波；包含重构过程（激波前沿的“周期性”破坏和反复形成）的准平行激波，以及两个激波的碰撞。在某些情况下讨论了模拟的数值方面。还研究了激波和无碰撞间断的初始化。
This is a review of studies on hybrid simulation of low-frequency processes in space plasmas. We discuss the main approximations used in the derivation fo the hybrid model: particle representation for ions; massless fluid representation for electrons. The main numerical schemes for the implementation of this model are considered: the generalized Ohm law scheme, the predictor-corrector scheme, the scheme using Boris and Runge-Kutta methods to compute the fields. The article reviews the literature on imulation of collisionless shocks: quasiperpendicular shocks with anisotropic (mirror and ioncyclotron) instabilities; quasiparallel shocks with inclusion of re-formation processes (“periodic” destruction and repeated formation of the shock front), as well as collision of two shocks. Numerical aspects of simulation are discussed in some cases. Initialization of shocks and collisionless discontinuities is examined.