Toroidal modeling of interaction between resistive wall mode and plasma flow
Abstract
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.
Cite
@article{arxiv.1305.3721,
title = {Toroidal modeling of interaction between resistive wall mode and plasma flow},
author = {Yueqiang Liu and Youwen Sun},
journal= {arXiv preprint arXiv:1305.3721},
year = {2013}
}
Comments
26 pages, 16 figures. copyright 2013 United Kingdom Atomic Energy Authority. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics