The effects of toroidal equilibrium flow on the stabilization of ballooning modes in tokamaks | |
Hu, Yanqiang1,2,3; Hu, Yemin1,2; Xiang, Nong1,2; Huang, Yanqing1,2,3; Zheng, Zhen1,2,3 | |
刊名 | AIP ADVANCES |
2020-07-01 | |
卷号 | 10 |
DOI | 10.1063/5.0005647 |
通讯作者 | Hu, Yemin(yeminhu@ipp.ac.cn) |
英文摘要 | Effects of toroidal flows on ballooning mode instabilities have been studied extensively in recent years. In the published works, toroidal flow effects are taken into account only in the perturbation equation while the tokamak equilibrium is assumed to be unchanged. In this work, the influence of a toroidal flow on ballooning mode instabilities is numerically investigated by using the BOUT++ code while the modification of the tokamak equilibrium due to the flow has been taken into account in fixing the profiles of the quasi-toroidal magnetic field, quasi-density, and quasi-pressure and only changing the toroidal Mach number. A toroidal flow can significantly modify the safety factor q profile and the pressure gradient del P, which then affects the ballooning instability. The simulation results show that in the presence of shear flows, the growth rate of the ballooning mode will be affected if the modified equilibrium is considered. For a shear flow, the growth rates of high-n modes are significantly reduced. |
资助项目 | National Nature Science Foundation of China[11375234] ; Ministry of Science and Technology of China[2015GB101003] ; National Key R&D Program of China[2017YFE0300400] ; National Key R&D Program of China[2017YFE0300406] |
WOS关键词 | EDGE LOCALIZED MODES ; PLASMA ROTATION ; INSTABILITIES ; TRANSPORT ; STABILITY ; PEDESTAL |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
语种 | 英语 |
出版者 | AMER INST PHYSICS |
WOS记录号 | WOS:000550672200003 |
资助机构 | National Nature Science Foundation of China ; Ministry of Science and Technology of China ; National Key R&D Program of China |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/43409] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Hu, Yemin |
作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Ctr Magnet Fus Theory, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, Yanqiang,Hu, Yemin,Xiang, Nong,et al. The effects of toroidal equilibrium flow on the stabilization of ballooning modes in tokamaks[J]. AIP ADVANCES,2020,10. |
APA | Hu, Yanqiang,Hu, Yemin,Xiang, Nong,Huang, Yanqing,&Zheng, Zhen.(2020).The effects of toroidal equilibrium flow on the stabilization of ballooning modes in tokamaks.AIP ADVANCES,10. |
MLA | Hu, Yanqiang,et al."The effects of toroidal equilibrium flow on the stabilization of ballooning modes in tokamaks".AIP ADVANCES 10(2020). |
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