Effect of shear equilibrium flow in Tokamak plasma on resistive wall modes

doi:10.1088/1674-1056/22/7/075203

Abstract A code named LARWM with non-ideal magnetohydrodynamic equations in cylindrical model is used to describe the instability in Tokamak plasma surrounded by a conducting wall with finite resistivity. We mainly take three factors related to the shear equilibrium plasma flow into consideration to study the stabilizing effect of the shear flow on the resistive wall modes (RWMs). The three factors are the velocity amplitude of flow, the shear rate of flow on plasma surface, and the inertial energy of equilibrium plasma flow. In addition, a local shear plasma flow is also calculated by the LARWM code. Consequently, it is found that the inertial energy of the shear equilibrium plasma flow has an important role in the stabilization of the RWMs.

Keywords: Tokamak plasma shear equilibrium flow resistive wall modes

Received: 05 November 2012
Revised: 04 December 2012
Accepted manuscript online:

PACS:	52.30.Cv	(Magnetohydrodynamics (including electron magnetohydrodynamics))
	52.35.Py	(Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))
	52.65.Kj	(Magnetohydrodynamic and fluid equation)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11105065 and 11275041) and the National Basic Research Program of China (Grant Nos. 2008CB717801, 2008CB787103, 2009GB105004, and 2010GB106002).

Corresponding Authors: Li Li
E-mail: lil@mail.dlut.edu.cn

Cite this article:

Li Li (李莉), Liu Yue (刘悦) Effect of shear equilibrium flow in Tokamak plasma on resistive wall modes 2013 Chin. Phys. B 22 075203

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Effect of shear equilibrium flow in Tokamak plasma on resistive wall modes

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