Ion inertia effect on the Kelvin-Helmholtz instability
Ion inertia effect on the Kelvin-Helmholtz instability
复制标题
离子惯性对开尔文-亥姆霍兹不稳定性的影响
DOI：
10.1029/91ja01312
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发表时间：
1991
影响因子：
--
通讯作者：
T. Terasawa
中科院分区：
文献类型：
--
作者：
M. Fujimoto;T. Terasawa
分析了双流体等离子体中薄速度剪切层中的Kelvin-Helmholtz不稳定性。在这里处理的系统中，电子被视为一个无质量的，电荷中和流体，和离子惯性效应出现通过霍尔项和电子压力项在广义欧姆定律被添加到通常的MHD系统的方程。线性化方程推导和数值求解的平行（V{sub O} {parallel} B{sub O}）和垂直（V{sub O} {vertical} B{sub O}）的几何形状。虽然这两种配置的离子惯性效应的增长率只有轻微的影响，本征模式的结构变得非常不同时，模式具有空间依赖性沿着的背景磁场。讨论了这些结果对磁层顶边界层的意义。
The Kelvin-Helmholtz instability in a thin velocity shear layer is analyzed in a two-fluid plasma. In the system treated here, electrons are treated as a massless, charge neutralizing fluid, and the ion inertia effects appearing through the Hall term and the electron pressure term in the generalized Ohm's law are added to the usual MHD system of equations. Linearized equations are derived and solved numerically for the parallel (V{sub O} {parallel} B{sub O}) and the perpendicular (V{sub O} {perpendicular} B{sub O}) geometries. Although the growth rates are only slightly affected by the ion inertia effect for both configurations, the structures of the eigenmodes become highly different when the modes have spatial dependences along the background magnetic field. The implication of the present results for the magnetopause boundary layer is discussed.
影响因子：
2.8
作者：
MIURA, A;PRITCHETT, PL
通讯作者：
PRITCHETT, PL