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Toroidal modeling of interaction between resistive wall mode and plasma flow

机译:电阻壁模式与等离子体流之间相互作用的环形建模

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摘要

The non-linear interplay between the resistive wall mode (RWM) and the toroidal plasma flow is numerically investigated in a full toroidal geometry, by simultaneously solving the initial value problems for the n = 1 RWM and the n = 0 toroidal force balance equation. Here, n is the toroidal mode number. The neoclassical toroidal viscous torque is identified as the major momentum sink that brakes the toroidal plasma flow during the non-linear evolution of the RWM. This holds for a mode that is initially either unstable or stable. For an initially stable RWM, the braking of the flow, and hence the eventual growth of the mode, depends critically on the initial perturbation amplitude.
机译:通过同时求解n = 1 RWM和n = 0环形力平衡方程的初值问题,在完整的环形几何体中数值研究了电阻壁模式(RWM)和环形等离子体流之间的非线性相互作用。在此,n是环形模式编号。新古典的环形粘性扭矩被认为是在RWM的非线性演变过程中制动环形等离子体流的主要动量吸收器。这适用于最初不稳定或稳定的模式。对于初始稳定的RWM,流量的制动以及因此模式的最终增长关键取决于初始扰动幅度。

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