Hall MHD simulations of MARFE movements in limiter and divertor configurations
MARFE movements in limiter and divertor configurations are studied using impurity Hall MHD code CLT. We simulate the MARFE movement experiment on J-TEXT and validated the simulation by comparing the line-averaged density and line radiation intensity between the simulation and the experiment. It is f...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/adaf43 |
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| _version_ | 1823860922408501248 |
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| author | Yiming Zu Zhiwei Ma Wei Zhang Wenjin Chen Yuchen Xu Ge Zhuang |
| author_facet | Yiming Zu Zhiwei Ma Wei Zhang Wenjin Chen Yuchen Xu Ge Zhuang |
| author_sort | Yiming Zu |
| collection | DOAJ |
| description | MARFE movements in limiter and divertor configurations are studied using impurity Hall MHD code CLT. We simulate the MARFE movement experiment on J-TEXT and validated the simulation by comparing the line-averaged density and line radiation intensity between the simulation and the experiment. It is found that impurity radiation cooling enhances the Hall effect, leading to the MARFE movement. Impurity radiation cooling causes the locally enhanced distribution of the current density. When the enhanced current approaches close to the q = 2 resonant surface, the tearing mode is excited. We also simulated MARFE movement in a lower divertor configuration with the X-point. The results show that the impurity radiation cooling at the X-point generates a clockwise poloidal velocity flow towards the high-field side. This velocity is mainly driven by the impurity radiation cooling while the Hall effect can be ignorable. When the temperature cooling is strong, this poloidal velocity is significant enough to drive MARFE towards the high-field side. Otherwise, MARFE remains located at the X-point. |
| format | Article |
| id | doaj-art-c7d1b89904b24d1ca9dd169680ac5461 |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-c7d1b89904b24d1ca9dd169680ac54612025-02-10T09:01:29ZengIOP PublishingNuclear Fusion0029-55152025-01-0165303600510.1088/1741-4326/adaf43Hall MHD simulations of MARFE movements in limiter and divertor configurationsYiming Zu0Zhiwei Ma1https://orcid.org/0000-0001-6199-9389Wei Zhang2https://orcid.org/0000-0001-5859-6298Wenjin Chen3Yuchen Xu4https://orcid.org/0000-0003-1975-9685Ge Zhuang5https://orcid.org/0000-0002-6048-8568Institute for Fusion Theory and Simulation, Zhejiang University , Hangzhou 310027, ChinaInstitute for Fusion Theory and Simulation, Zhejiang University , Hangzhou 310027, ChinaInstitute for Fusion Theory and Simulation, Zhejiang University , Hangzhou 310027, ChinaSouthwestern Institute of Physics , PO Box 432, Chengdu, Sichuan 610041, ChinaSchool of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, ChinaSchool of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, ChinaMARFE movements in limiter and divertor configurations are studied using impurity Hall MHD code CLT. We simulate the MARFE movement experiment on J-TEXT and validated the simulation by comparing the line-averaged density and line radiation intensity between the simulation and the experiment. It is found that impurity radiation cooling enhances the Hall effect, leading to the MARFE movement. Impurity radiation cooling causes the locally enhanced distribution of the current density. When the enhanced current approaches close to the q = 2 resonant surface, the tearing mode is excited. We also simulated MARFE movement in a lower divertor configuration with the X-point. The results show that the impurity radiation cooling at the X-point generates a clockwise poloidal velocity flow towards the high-field side. This velocity is mainly driven by the impurity radiation cooling while the Hall effect can be ignorable. When the temperature cooling is strong, this poloidal velocity is significant enough to drive MARFE towards the high-field side. Otherwise, MARFE remains located at the X-point.https://doi.org/10.1088/1741-4326/adaf43impurity radiationMARFE movementMHD simulation |
| spellingShingle | Yiming Zu Zhiwei Ma Wei Zhang Wenjin Chen Yuchen Xu Ge Zhuang Hall MHD simulations of MARFE movements in limiter and divertor configurations Nuclear Fusion impurity radiation MARFE movement MHD simulation |
| title | Hall MHD simulations of MARFE movements in limiter and divertor configurations |
| title_full | Hall MHD simulations of MARFE movements in limiter and divertor configurations |
| title_fullStr | Hall MHD simulations of MARFE movements in limiter and divertor configurations |
| title_full_unstemmed | Hall MHD simulations of MARFE movements in limiter and divertor configurations |
| title_short | Hall MHD simulations of MARFE movements in limiter and divertor configurations |
| title_sort | hall mhd simulations of marfe movements in limiter and divertor configurations |
| topic | impurity radiation MARFE movement MHD simulation |
| url | https://doi.org/10.1088/1741-4326/adaf43 |
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