Toroidal modeling of interaction between resistive wall mode and plasma flow

Journal Article · Fri Feb 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4793449· OSTI ID:22113448

Yueqiang, Liu ^[1]; Youwen, Sun ^[2]

---

1. Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom)
2. Institute of Plasma Physics, Chinese Academy of Sciences, PO Box 1126, Hefei 230031 (China)

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.

• OSTI ID: 22113448
• Journal Information: Physics of Plasmas, Vol. 20, Issue 2; Other Information: (c) 2013 EURATOM; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
CONFINEMENT
DISTURBANCES
EQUATIONS
INTERACTIONS
MAGNETOHYDRODYNAMICS
NEOCLASSICAL TRANSPORT THEORY
NUMERICAL ANALYSIS
PERTURBATION THEORY
PLASMA
PLASMA INSTABILITY
PLASMA SIMULATION