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Effect of poloidal equilibrium flow and pressure gradient on the m/n=2/1 tearing mode

文献类型：期刊论文

作者Ming, Yue2; Zhou, Deng1; Wang, Jinfang1
刊名NUCLEAR FUSION
出版日期2022-06-01
卷号62
ISSN号0029-5515
关键词tearing mode poloidal flow pressure gradient
DOI10.1088/1741-4326/ac4947
通讯作者Ming, Yue(mingyue@ytu.edu.cn) ; Zhou, Deng(dzzhou@ipp.ac.cn)
英文摘要The effect of equilibrium poloidal flow and pressure gradient on the m/n = 2/1 (m is the poloidal mode number and n is the toroidal mode number) tearing mode instability for tokamak plasmas is investigated. Based on the condition of p not equal 0 (p is plasma pressure), the radial part of the motion equation is derived and approximately solved for large poloidal mode numbers (m). By solving partial differential equations (Whittaker equation) containing second order singularity, the tearing mode stability index Delta ' is obtained. It is shown that the effect of equilibrium poloidal flow and pressure gradient has an adverse effect on the tearing mode instability when the pressure gradient is nonzero. The poloidal equilibrium flow with pressure perturbation partially reduces the stability of the classical tearing mode. But the larger pressure gradient in a certain poloidal flow velocity range can abate the adverse influence of equilibrium poloidal flow and pressure gradient. The numerical results do also indicate that the derivative of pressure gradient has a significant influence on the determination of the instability region of the poloidal flow with pressure perturbation.
WOS关键词RESISTIVE INSTABILITIES ; ROTATION ; STABILITY
资助项目National Key R&D Program of China[2017YFE0300404] ; National Natural Science Foundation of China[11675222] ; Collaborative Innovation Program of Hefei Science Center, CAS[2019HSC-CIP015]
WOS研究方向Physics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000786148900001
资助机构National Key R&D Program of China ; National Natural Science Foundation of China ; Collaborative Innovation Program of Hefei Science Center, CAS
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/128467]  
专题中国科学院合肥物质科学研究院
通讯作者Ming, Yue; Zhou, Deng
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Yantai Univ, Sch Optoelect Informat Sci & Technol, Yantai 264005, Peoples R China
推荐引用方式
GB/T 7714		 Ming, Yue,Zhou, Deng,Wang, Jinfang. Effect of poloidal equilibrium flow and pressure gradient on the m/n=2/1 tearing mode[J]. NUCLEAR FUSION,2022,62.
APA Ming, Yue,Zhou, Deng,&Wang, Jinfang.(2022).Effect of poloidal equilibrium flow and pressure gradient on the m/n=2/1 tearing mode.NUCLEAR FUSION,62.
MLA Ming, Yue,et al."Effect of poloidal equilibrium flow and pressure gradient on the m/n=2/1 tearing mode".NUCLEAR FUSION 62(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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