Linear and Nonlinear Development of the m = 0 Instability in Z-Pinch Equilibria with Axial Sheared Flows

被引：0
|
作者：
Ioana Paraschiv
Bruno S. Bauer
Irvin R. Lindemuth
Volodymyr Makhin
机构：
[1] University of Nevada Reno,Department of Physics
来源：
Journal of Fusion Energy | 2009年 / 28卷
关键词：
Z-pinch; 2D MHD simulation; Sheared flow stabilization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of sheared flows on the m = 0 instability development in a z-pinch is numerically investigated using a 2D magnetohydrodynamic (MHD) code. The behavior of both internal and free-boundary modes is studied by using two types of initial configurations: a diffuse Bennett equilibrium and a free-boundary parabolic equilibrium. It was found that sheared flows change the m = 0 development by reducing the linear growth rates, decreasing the saturation amplitude, and modifying the instability spectrum. Full stability can be obtained for supersonic plasma flows, but a larger shear is needed to obtain stabilization of free-boundary modes.
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页码：195 / 199
页数：4
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