剪切磁场位形下电阻壁模不稳定性的数值模拟

doi:10.16568/j.0254-6086.201801004

核聚变与等离子体物理 ›› 2018, Vol. 2 ›› Issue (1): 21-28.DOI: 10.16568/j.0254-6086.201801004

剪切磁场位形下电阻壁模不稳定性的数值模拟

陈龙溪1, 2，王进芳2, 3，孙哲1, 2，边珍珠1, 2

(1. 山东青年政治学院信息工程学院，济南 250103； 2. 山东省高校信息安全与智能控制重点实验室，济南 250103； 3. 中国科学院等离子体物理研究所，合肥 230031)

收稿日期:2016-12-07 修回日期:2017-07-24 出版日期:2018-03-15 发布日期:2018-03-15
作者简介:陈龙溪(1984-)，男，山东莒县人，博士，副教授，从事等离子体物理理论与数值模拟研究。
基金资助:
国家自然科学基金(11175156)；山东省自然科学基金(ZR2016AM30)

Numerical studies on resistive wall mode instability with magnetic shears

CHEN Long-xi, WANG Jin-fang, SUN Zhe, BIAN Zhen-zhu

(1. School of Information Engineering, Shandong Youth University of Political Science, Jinan 250103; 2. Key Lab of Information Security and Intelligent Control in Universities of Shandong, Jinan 250103; 3. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)

Received:2016-12-07 Revised:2017-07-24 Online:2018-03-15 Published:2018-03-15

摘要/Abstract

摘要：

数值研究了平衡磁场位形对电阻壁模稳定性的影响。研究发现，磁场剪切对电阻壁模有解稳作用，对于不同的剪切磁场位形，最不稳定的电阻壁模的环向模数和极向模数不同。等离子流对电阻壁模的增长有抑制作用，稳定住电阻壁模的临界流速度随着磁场剪切率的增大而增大。电阻壁模经线性增长后，进入非线性演化阶段，最后达到饱和状态，剪切磁场位形下的扰动磁能比均匀磁场位形下的扰动磁能饱和度高。

关键词: 电阻壁模, 磁场剪切, 稳定性, 数值模拟

Abstract:

The effects of magnetic shear on the resistive wall mode (RWM) are numerically studied in a slab geometry. The most unstable mode is different with different magnetic shear rate . The shear in the magnetic field has an unstable effect on the linear evolution of the RWM. On the other hand, the critical flow velocity for stabilizing the RWM increases with increasing of shear rate . The RWM saturates in the nonlinear phase. The saturation can be attributed to flux piling-up on the resistive wall. The saturation level increases with increasing of shear rate .

Key words: Resistive wall mode, magnetic shear, Stability, Numerical study

中图分类号:

O534.2

陈龙溪1, 2，王进芳2, 3，孙哲1, 2，边珍珠1, 2. 剪切磁场位形下电阻壁模不稳定性的数值模拟[J]. 核聚变与等离子体物理, 2018, 2(1): 21-28.

CHEN Long-xi, WANG Jin-fang, SUN Zhe, BIAN Zhen-zhu. Numerical studies on resistive wall mode instability with magnetic shears[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2018, 2(1): 21-28.

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剪切磁场位形下电阻壁模不稳定性的数值模拟

Numerical studies on resistive wall mode instability with magnetic shears

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