Toroidal rotation in tokamak plasmas

被引：58

作者：

Callen, J. D. ^{[1
]}

Cole, A. J. ^{[1
]}

Hegna, C. C. ^{[1
]}

机构：

[1] Univ Wisconsin, Madison, WI 53706 USA

来源：

NUCLEAR FUSION | 2009年 / 49卷 / 08期

关键词：

NEOCLASSICAL TRANSPORT; MOMENTUM DISSIPATION; REGIME;

D O I：

10.1088/0029-5515/49/8/085021

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A comprehensive transport equation for the evolution of toroidal rotation in tokamak plasmas is developed self-consistently from the two-fluid momentum equations taking account of the constraints imposed by faster time scale processes. The resultant plasma toroidal rotation equation includes the effects of collision-induced perpendicular viscosities, anomalous transport due to microturbulence in the plasma, momentum sources and collision-based parallel viscous forces due to 3D non-axisymmetric (NA) magnetic field components produced by external fields and MHD-type instabilities in the plasma. Non-resonant NA fields produce a toroidal torque throughout the plasma that relaxes the toroidal flow to an 'intrinsic' or 'offset' ion-temperature-gradient diamagnetic-type flow in the direction counter to the plasma current. A NA resonant field error causes a toroidal torque localized near its rational surface. The combination of resonant and non-resonant NA field components is found to predict scalings for error field penetration and mode locking thresholds that are in closer agreement with empirical data from tokamak plasmas.

引用

页数：8

共 28 条

[1]

Braginskii S. I., 1965, Rev. Plasma Phys, V1, P205

[2]

Callen JD, 2008, PHYS PLASMAS, V15, DOI 10.1063/1.2828095

[3] Paleoclassical transport in low-collisionality toroidal plasmas [J].