Influence of toroidal rotation on the tearing mode in tokamak plasmas

Zhenghao REN (任政豪); Jinyuan LIU (刘金远); Feng WANG (王丰); Huishan CAI (蔡辉山); Zhengxiong WANG (王正汹); Wei SHEN (申伟)

doi:10.1088/2058-6272/ab77d4

Plasma Science and Technology > 2020 > 22(6): 65102-065102. > DOI: 10.1088/2058-6272/ab77d4

Zhenghao REN (任政豪), Jinyuan LIU (刘金远), Feng WANG (王丰), Huishan CAI (蔡辉山), Zhengxiong WANG (王正汹), Wei SHEN (申伟). Influence of toroidal rotation on the tearing mode in tokamak plasmas[J]. Plasma Science and Technology, 2020, 22(6): 65102-065102. DOI: 10.1088/2058-6272/ab77d4

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Influence of toroidal rotation on the tearing mode in tokamak plasmas

¹ Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China
² Department of Engineering and Applied Physics, CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei 230026, People's Republic of China
³ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China

Funds: This work was supported by National Natural Science Foundation of China (Grant Nos. 11975068 and 11605021), the National Key R&D Program of China (Grant No. 2017YFE0301900), the Key Research Program of Frontier Science of Chinese Academy of Sciences (Grant No. QYZDJSSW-SYS016), and the Youth Innovation Promotion Association of CAS and the Fundamental Research Funds for the Central Universities (Grant No. DUT18ZD101).

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Received Date: December 16, 2019
Revised Date: February 18, 2020
Accepted Date: February 18, 2020

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Abstract

Abstract

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 β and rotation frequency Ω. On the premise that Ω is sufficiently large, when β 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 β is less than a critical value, the stabilizing effect from the Coriolis force overcomes that from the centrifugal force. However, if Ω is small, then the effect of equilibrium modification due to the centrifugal force is not significant even if β is large. Finally, the results showed that toroidal rotation shear enhances the stabilizing effect.
- tearing mode,
- toroidal rotation,
- resistive MHD

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References (29)

References

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Influence of toroidal rotation on the tearing mode in tokamak plasmas