Knowledge Management System of Hefei Institute of Physical Science，CAS
| Modelling of tungsten impurity edge transport and screening for different divertor conditions in EAST | |
Wang, Hui1,2; Xu, Guoliang1; Ding, Rui1 ; Liu, Xiaoju1; Si, Hang1; Zhang, Qing1; Ding, Fang1; Zhu, Dahuan1; Yan, Rong1; Xie, Hai1; Meng, Lingyi1; Wang, Liang1; Hai, Ran3; Wang, Zhibin4; Chen, Junling1
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| 2022-12-01 | |
| Source Publication | NUCLEAR FUSION
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| ISSN | 0029-5515 |
| Corresponding Author | Xu, Guoliang(guoliang.xu@ipp.ac.cn) ; Ding, Rui(rding@ipp.ac.cn) |
| Abstract | Tungsten (W) transport and screening in the edge plasma are investigated for EAST high dissipative divertor conditions. By combining the 1D impurity fluid model (1DImpFM) and the two-point model formatting (2PMF), W screening is proved to be enhanced for high upstream plasma density conditions, mainly because the impurity temperature gradient velocity decreases with the increase of the upstream plasma density. Based on dedicated EAST density ramp-up experiments, 2D simulations of W erosion and transport are carried out for different levels of dissipative divertor conditions by using the SOLPS-DIVIMP code package, and the modeling results are benchmarked with the 1DImpFM analytic model. The prompt-redeposition, the divertor screening, and the main SOL screening are quantitatively analyzed. For detached divertor conditions, the increase in the W ionization length reduces the prompt redeposition rate, but both the divertor screening and SOL screening are reinforced. The 1DImpFM can interpret well the W leakage in the near separatrix region; however, the 2D simulations suggest that the impurity pressure gradient force which is neglected by the 1DImpFM plays an important role, especially in the far-SOL region. With the divertor condition varied from the high-recycling regime to the deep detachment regime, the W source moves from the near strike point region to the far SOL, and thus makes the W transport in the far SOL more important. Therefore, the impurity pressure gradient force cannot be neglected for edge W transport analysis, especially for the detached divertor conditions. |
| Keyword | divertor tungsten erosion impurity transport EAST DIVIMP |
| DOI | 10.1088/1741-4326/ac8fa4 |
| WOS Keyword | PLASMA ; LAYER ; FLOW |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[12022511] ; National Natural Science Foundation of China[12005143] ; National Natural Science Foundation of China[12075283] ; National MCF Energy R&D Program of China[2022YFE03180100] ; National MCF Energy R&D Program of China[2019YFE03080100] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-SLH010] ; Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences[DSJJ-2021-02] ; Collaborative Innovation Program of Hefei Science Center Chinese Academy of Sciences[2020HSC-CIP015] |
| Funding Organization | National Natural Science Foundation of China ; National MCF Energy R&D Program of China ; Key Research Program of Frontier Sciences, CAS ; Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences ; Collaborative Innovation Program of Hefei Science Center Chinese Academy of Sciences |
| WOS Research Area | Physics |
| WOS Subject | Physics, Fluids & Plasmas |
| WOS ID | WOS:000864447700001 |
| Publisher | IOP Publishing Ltd |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.hfcas.ac.cn:8080/handle/334002/129308 |
| Collection | 中国科学院合肥物质科学研究院 |
| Corresponding Author | Xu, Guoliang; Ding, Rui |
| Affiliation | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China 3.Dalian Univ Technol, Sch Phys, Chinese Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China 4.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Hui,Xu, Guoliang,Ding, Rui,et al. Modelling of tungsten impurity edge transport and screening for different divertor conditions in EAST[J]. NUCLEAR FUSION,2022,62. |
| APA | Wang, Hui.,Xu, Guoliang.,Ding, Rui.,Liu, Xiaoju.,Si, Hang.,...&Chen, Junling.(2022).Modelling of tungsten impurity edge transport and screening for different divertor conditions in EAST.NUCLEAR FUSION,62. |
| MLA | Wang, Hui,et al."Modelling of tungsten impurity edge transport and screening for different divertor conditions in EAST".NUCLEAR FUSION 62(2022). |
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