Toroidal modeling of interaction between resistive wall mode and plasma flow
Journal article, 2013

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 1⁄4 1 RWM and the n 1⁄4 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.

Resistive Wall Mode

non-linear interaction

plasma flow

Numerical modeling

Author

Yueqiang Liu

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

Yuowen Sun

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 20 2 022505-

Areas of Advance

Energy

Roots

Basic sciences

Subject Categories

Fusion, Plasma and Space Physics

DOI

10.1063/1.4793449

More information

Created

10/7/2017