Theory of gyrokinetic velocity moment and its application for zonal flows in a tokamak plasma
文献类型：期刊论文
| 作者 | Zhang, Debing2; Xu, Yingfeng1 ; Dai, Zongliang3; Wang, Shaojie3
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 60 |
| 关键词 | gyrokinetic theory scalar invariance velocity moment turbulent poloidal Reynolds stress zonal radial electric field |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ab72e1 |
| 通讯作者 | Xu, Yingfeng(xuyingfeng@ipp.ac.cn) |
| 英文摘要 | The calculation of the velocity moment in the gyrokinetic theory and its application in the study of zonal flows in a tokamak plasma are investigated. Based on the scalar invariance property, the expression for the particle velocity in the gyrocenter coordinates is obtained, and a method to systematically calculate the velocity moment in the gyrokinetic theory is proposed, especially for the calculation of the first-order perpendicular velocity moment. The kinetic equation which describes the evolution of the perturbed distribution on the meso-scale of the zonal flow is derived. The effects of the turbulent particle flux, the turbulent energy flux, the turbulent toroidal Reynolds stress and the turbulent poloidal Reynolds stress (PRS) are explicitly included in the phase-space particle flux. In the cylindrical geometry, the zonal radial electric field is driven by the turbulent PRS and the turbulent energy flux, and the result agrees with the radial force balance equation. In the toroidal geometry, the zonal radial electric field is driven by the turbulent PRS, the turbulent energy flux and the turbulent toroidal Reynolds stress; in contrast to the case in the cylindrical geometry, the effect of the turbulent PRS is shielded by the toroidal effect. By combining the radial force balance equation, the poloidal momentum equation in the toroidal geometry is obtained. |
| WOS关键词 | POLOIDAL FLOW ; PERTURBATION-THEORY ; TURBULENCE ; CONFINEMENT ; TRANSPORT ; DRIVEN ; RELAXATION ; EQUATIONS ; ROTATION ; SHEAR |
| 资助项目 | National Natural Science Foundation of China[11875254] ; National Natural Science Foundation of China[11775265] ; National Natural Science Foundation of China[11675176] ; Users with Excellence Project of Hefei Science Center CAS[2018HSC-UE009] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000519028200001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China ; Users with Excellence Project of Hefei Science Center CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103909]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Xu, Yingfeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China 3.Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Debing,Xu, Yingfeng,Dai, Zongliang,et al. Theory of gyrokinetic velocity moment and its application for zonal flows in a tokamak plasma[J]. NUCLEAR FUSION,2020,60. |
| APA | Zhang, Debing,Xu, Yingfeng,Dai, Zongliang,&Wang, Shaojie.(2020).Theory of gyrokinetic velocity moment and its application for zonal flows in a tokamak plasma.NUCLEAR FUSION,60. |
| MLA | Zhang, Debing,et al."Theory of gyrokinetic velocity moment and its application for zonal flows in a tokamak plasma".NUCLEAR FUSION 60(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。