Intrinsic rotation driven by the electrostatic turbulence in up-down asymmetric toroidal plasmas

被引：45

作者：

Camenen, Y. ^{[1
]}

Peeters, A. G. ^{[1
]}

Angioni, C. ^{[2
]}

Casson, F. J. ^{[1
]}

Hornsby, W. A. ^{[1
]}

Snodin, A. P. ^{[1
]}

Strintzi, D. ^{[3
]}

机构：

[1] Univ Warwick, Dept Phys, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England

[2] Max Planck Inst Plasma Phys, EURATOM IPP Assoc, D-85748 Garching, Germany

[3] Natl Tech Univ Athens, EURATOM Assoc, GR-15773 Athens, Greece

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

plasma simulation; plasma toroidal confinement; plasma turbulence; C-MOD PLASMAS; ANOMALOUS MOMENTUM TRANSPORT; OHMIC H-MODE; TOKAMAK PLASMA; TCV TOKAMAK; DIII-D; INPUT; DISCHARGES;

D O I：

10.1063/1.3138747

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：

The transport of parallel momentum by small scale fluctuations is intrinsically linked to symmetry breaking in the direction of the magnetic field. In tokamaks, an up-down asymmetry in the equilibrium proves to be an efficient parallel symmetry breaking mechanism leading to the generation of a net radial flux of parallel momentum by the electrostatic turbulence [Y. Camenen , Phys. Rev. Lett. 102, 125001 (2009)]. This flux is neither proportional to the toroidal rotation nor to its gradient and arises from an incomplete cancellation of the local contributions to the parallel momentum flux under the flux surface average. The flux of parallel momentum then depends on the asymmetry of the curvature drift and on the extension of the fluctuations around the low field side midplane. In this paper, the mechanisms underlying the generation of the flux of parallel momentum are highlighted and the main dependences on plasma parameters investigated using linear gyrokinetic simulations.

引用

页数：9

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