Flux-driven simulations of self-generated radial electric fields and transition to improved confinement regime
文献类型：期刊论文
| 作者 | Zhou, Zhenyu2; Xu, G. S.1; Dong, Chao3; Lu, Zhixin4; Zhou, Tianchun5; Jiang, Changzhi2; Li, Bo2 ; Ernst, D. R.6
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| 刊名 | PHYSICS OF PLASMAS
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 31 |
| ISSN号 | 1070-664X |
| DOI | 10.1063/5.0207973 |
| 通讯作者 | Li, Bo(plasma@buaa.edu.cn) |
| 英文摘要 | The evolution of plasma profiles and radial electric fields in the edge of tokamaks during a transition to an improved confinement regime is explored in an unfavorable configuration based on self-consistent, flux-driven simulations of reduced Braginskii models with ion pressure dynamics. The edge plasma response to the heating power is explored by varying the heat source strength. The energy transfer from turbulent to mean flows is induced by the large-amplitude fluctuations as the power input becomes sufficiently strong. It is found that ion pressure fluctuations play an important role in the generation of the Reynolds power. Consequently, the plasma spontaneously forms radial electric fields localized at the edge, which reduces the radial correlation and amplitudes of edge fluctuations. An edge temperature pedestal also forms while the density profiles remain nearly unchanged, featuring an I-mode-like regime. |
| WOS关键词 | L-H TRANSITION ; TURBULENCE ; EDGE ; TRANSPORT ; FLUCTUATIONS ; PHASE |
| 资助项目 | National MCF Energy R D Program[2018YFE0311300] ; The 111 Center[B20065] ; U.S. DOE[DE-FG02-91-ER54109] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001251440800003 |
| 出版者 | AIP Publishing |
| 资助机构 | National MCF Energy R D Program ; The 111 Center ; U.S. DOE |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/136334]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li, Bo |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 4.Max Planck Inst Plasma Phys, D-85748 Garching, Germany 5.Harbin Inst Technol, Sch Phys, Harbin 150001, Peoples R China 6.MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA |
| 推荐引用方式 GB/T 7714 | Zhou, Zhenyu,Xu, G. S.,Dong, Chao,et al. Flux-driven simulations of self-generated radial electric fields and transition to improved confinement regime[J]. PHYSICS OF PLASMAS,2024,31. |
| APA | Zhou, Zhenyu.,Xu, G. S..,Dong, Chao.,Lu, Zhixin.,Zhou, Tianchun.,...&Ernst, D. R..(2024).Flux-driven simulations of self-generated radial electric fields and transition to improved confinement regime.PHYSICS OF PLASMAS,31. |
| MLA | Zhou, Zhenyu,et al."Flux-driven simulations of self-generated radial electric fields and transition to improved confinement regime".PHYSICS OF PLASMAS 31(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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