Screening effect of plasma flow on the resonant magnetic perturbation penetration in tokamaks based on two-fluid model

被引：0

作者：

汤炜康 ^{[1
,2
]}

栾其斌 ^{[3
]}

孙宏恩 ^{[3
]}

魏来 ^{[1
,2
]}

路爽爽 ^{[1
]}

姜帅 ^{[1
]}

徐健 ^{[1
]}

王正汹 ^{[1
]}

机构：

[1] Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams(Ministry of Education),School of Physics, Dalian University of Technology

[2] Key Laboratory of Geospace Environment, University of Science and Technology of China

[3] Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology

来源：

Plasma Science and Technology | 2023年 / 04期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

D O I：

暂无

中图分类号：

TL631.24 []; TL612 [];

学科分类号：

摘要：

Numerical simulation on the resonant magnetic perturbation penetration is carried out by the newly-updated initial value code MDC(MHD@Dalian Code). Based on a set of two-fluid fourfield equations, the bootstrap current, parallel, and perpendicular transport effects are included appropriately. Taking into account the bootstrap current, a mode penetration-like phenomenon is found, which is essentially different from the classical tearing mode model. To reveal the influence of the plasma flow on the mode penetration process, E × B drift flow and diamagnetic drift flow are separately applied to compare their effects. Numerical results show that a sufficiently large diamagnetic drift flow can drive a strong stabilizing effect on the neoclassical tearing mode. Furthermore, an oscillation phenomenon of island width is discovered. By analyzing it in depth, it is found that this oscillation phenomenon is due to the negative feedback regulation of pressure on the magnetic island. This physical mechanism is verified again by key parameter scanning.

引用

页码：29 / 38

页数：10

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