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Effect of Parallel Diffusion of Equilibrium Pressure on Interaction between Interchange Mode and Static Magnetic Island

机译:平衡压力的平行扩散对交换模式与静磁岛相互作用的影响

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The effect of equilibrium pressure diffusion parallel to the magnetic field on the interaction between a resistive interchange mode and a static magnetic island is studied by means of a nonlinear numerical simulation based on the reduced magnetohydrodynamics equations. Previous work for the case without the parallel diffusion of the equilibrium pressure [K. Saito et al., Phys. Plasmas 17, 062504 (2010)] showed that two solutions exist for a given error magnetic field: one indicates the increase of the island width in the nonlinear evolution of the interchange mode and the other indicates the decrease of the width. For the case with parallel diffusion of the equilibrium pressure, our present study shows that only the solution indicating the increase of the width exists; we discuss the causes for this.
机译:通过基于简化的磁流体动力学方程的非线性数值模拟,研究了平行于磁场的平衡压力扩散对电阻交换模式与静态磁岛之间相互作用的影响。在没有平衡压力平行扩散的情况下的先前工作[K。 Saito等,Phys。 Plasmas 17,062504(2010)]表明,对于给定的误差磁场,存在两种解决方案:一种表示交换模式的非线性演化中岛宽的增加,另一种表示宽度的减小。对于平衡压力平行扩散的情况,我们目前的研究表明,只有表明宽度增加的解存在;反之,则不存在。我们讨论了造成这种情况的原因。

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