磁流体动力学“猫眼”和等离子体流的稳定效应
Magnetohydrodynamic "cat eyes" and stabilizing effects of plasma flow
摘要：
本文将流体力学框架下描述无穷多排全同涡的猫眼定常解推广到具有任意方向不可压缩流动的磁流体动力学平衡方程。扩展的解决方案涵盖了各种平衡，包括一维和二维广义的无力和哈里斯片配置，这是优选的，从那些通常采用的初始状态在重联研究。虽然涡流形状不受磁场的影响，但与平衡非线性相结合的流动通过形成位于猫眼涡流内的压力岛而对等压面产生强烈影响。更重要的是，磁场对齐流的实验融合的相关性和流动剪切有显着的稳定效果，在该地区的压力岛。通过外部轴向（“环形”）磁场增强稳定区域。
英文摘要：
The cat-eyes steady state solution in the framework of hydrodynamics describing an infinite row of identical vortices is extended to the magnetohydrodynamic equilibrium equation with incompressible flow of arbitrary direction. The extended solution covers a variety of equilibria including one- and two-dimensional generalized force-free and Harris-sheet configurations which are preferable from those usually employed as initial states in reconnection studies. Although the vortex shape is not affected by the magnetic field, the flow in conjunction with the equilibrium nonlinearity has a strong impact on isobaric surfaces by forming pressure islands located within the cat-eyes vortices. More importantly, a magnetic-field-aligned flow of experimental fusion relevance and the flow shear have significant stabilizing effects in the region of pressure islands. The stable region is enhanced by an external axial ("toroidal") magnetic field.
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