A Versatile Numerical Method for the Multi-Fluid Plasma Model in Partially- and Fully-Ionized Plasmas

A Versatile Numerical Method for the Multi-Fluid Plasma Model in Partially- and Fully-Ionized Plasmas
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部分和完全电离等离子体中多流体等离子体模型的通用数值方法

DOI：
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发表时间：
2018
期刊：
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通讯作者：
S. Poedts
S. Poedts
中科院分区：
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文献类型：
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作者：
A. Alvarez;N. Ozak;A. Lani;N. Mansour;H. Deconinck;S. Poedts

文献摘要

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我们提出了一种新的数值方法来求解多流体等离子体方程，包括输运、摩擦和化学反应项，并耦合到完整的麦克斯韦方程。该数值方法的特点是电磁场的格式具有适当的数值耗散尺度，在所有速度区(从亚音速到超音速)下求解流动，以及隐式时间积分来处理系统的刚度。文中还给出了在各种等离子体条件下数值格式的验证。
We present an innovative numerical method that solves for the multi-fluid plasma equations, including the transport, frictional, and chemical reactions terms, coupled to full Maxwell’s equations. The numerical method features a scheme for the electromagnetic field with a proper scaling for the numerical dissipation, a scheme that solves flows at all speeds regimes (from subsonic to supersonic), and implicit time integration to tackle the stiffness of the system. Verification of the numerical scheme is also presented in a wide variety of plasma conditions.