Numerical simulation of plasmas instabilities by applying non-resonant magnetic perturbations on J-TEXT
ID:19 View Protection:PUBLIC Updated Time:2021-07-13 08:15:43 Hits:77 Poster Presentation

Start Time:2021-07-12 11:40 (Asia/Shanghai)

Duration:20min

Session:[E] E-poster [E] E-poster

Abstract
Simulations of the influence of external non-resonant magnetic perturbation field (non-RMP) on plasma instabilities are performed with the 3D magnetohydrodynamic code called NIMROD. And non-RMP with the dominant mode of m/n=-1/1 is used as the boundary condition of NIMROD simulations. Simulation results show that magnetic perturbation of plasma is supressed with the addition of non-RMP. And in a certain range, the larger the amplitude of the non-RMP is, the more obvious the suppression effects on plasmas perturbation of n=1 is. Moreover, the effects of non-RMP on plasma disruption is investigated. It was found that non-RMP could not only significantly reduce the amplitude and rate of instability growth, but also delay the TQ and CQ timeduring disruption.
Keywords
plasma instabilities;non-resonant magnetic perturbation field;numerical simulation
Speaker
Fan Gu
student School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan

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Contact:
Prof. Lu Wang

Email: luwang@hust.edu.cn

Prof. Zhongyong Chen

Email: zychen@hust.edu.cn

Jingwei Fu

Email: fujingwei@hust.edu.cn

Meiling Liang

Email: mlliang@hust.edu.cn

Wei Zheng

Email: zhengwei@hust.edu.cn