Influence of toroidal rotation on the tearing mode in tokamak plasmas

被引：7

作者：

Ren, Zhenghao ^{[1
]}

Liu, Jinyuan ^{[1
]}

Wang, Feng ^{[1
]}

Cai, Huishan ^{[2
]}

Wang, Zhengxiong ^{[1
]}

Shen, Wei ^{[3
]}

机构：

[1] Dalian Univ Technol, Sch Phys, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China

[2] Univ Sci & Technol China, CAS Key Lab Geospace Environm, Dept Engn & Appl Phys, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

来源：

PLASMA SCIENCE & TECHNOLOGY | 2020年 / 22卷 / 06期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

tearing mode; toroidal rotation; resistive MHD; SHEAR; FLOW; STABILITY; FIELD;

D O I：

10.1088/2058-6272/ab77d4

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 stabilizing mechanism of toroidal rotation on the tearing mode is studied using the 3D toroidal resistive magnetohydrodynamic code M3D. It is found that the dominating mechanism, either the centrifugal effect or the Coriolis effect, depends on the specific pressure beta and rotation frequency omega. On the premise that omega is sufficiently large, when beta is greater than a critical value, the effect of the centrifugal force is dominant, and the stabilizing effect mainly comes from the modification of equilibrium induced by the centrifugal force; when beta is less than a critical value, the stabilizing effect from the Coriolis force overcomes that from the centrifugal force. However, if omega is small, then the effect of equilibrium modification due to the centrifugal force is not significant even if beta is large. Finally, the results showed that toroidal rotation shear enhances the stabilizing effect.

引用

页数：7

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