Edge localized mode characteristics and divertor heat flux during stationary and transient phase for CFETR hybrid scenario
文献类型：期刊论文
| 作者 | Li, Zeyu1,2,3; Zhu, Yiren4; Xu, Guoliang5; Chan, V. S.6,7; Xu, Xueqiao8; Chen, Jiale9 ; Ding, Rui9; Xia, Tianyang9; Jian, Xiang10; Zou, Yunpeng4
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| 刊名 | PLASMA PHYSICS AND CONTROLLED FUSION
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| 出版日期 | 2021-03-01 |
| 卷号 | 63 |
| 关键词 | China Fusion Engineering Test Reactor grassy edge localized mode transient heat flux heat flux width melting tungsten erosion |
| ISSN号 | 0741-3335 |
| DOI | 10.1088/1361-6587/abd25d |
| 通讯作者 | Li, Zeyu(lizeyu@fusion.gat.com) |
| 英文摘要 | The study of edge localized mode (ELM) behavior, stationary heat flux and transient heat flux during the ELM crash phase is performed for a China Fusion Engineering Test Reactor (CFETR) 1 GW hybrid mode operation scenario (R = 7.2 m, B-T = 6.5 T, I-p = 13.78 MA). Modeling and simulation start with a scenario obtained by multi-code integrated modeling on the one modeling framework for integrated tasks framework. Linear stability and nonlinear simulations of ELM dynamics are carried out using the BOUT++ six-field reduced magnetohydrodynamic module, which show a much smaller ELM energy loss (Delta(ELM) similar to 0.13%) compared to that of a Type-I ELM. Parametric analysis of the weak linear growth rate and small ELM energy loss characteristics shed light on physics corresponding to a grassy ELM regime for CFETR 1 GW hybrid scenario. The transient heat flux on the divertor target during this small ELM phase is investigated using BOUT++. We found that upstream radial transport in the scrape-off-layer (SOL) induced by small ELMs is weak, which keeps it in the drift-dominated region. However, the heat flux width is still broadened to lambda(q) = 4.64 mm by the increase of separatrix temperature during ELM nonlinear evolution. The impact of transient peak heat load and ELM energy fluence on tungsten melting and net erosion rate of divertor target is evaluated for the first-time using physics-based transport that connects the pedestal with the SOL. Energy fluence caused by a single ELM pulse is below the tungsten melting limit, while tungsten erosion would exceed the material requirements. We conclude that external mitigation methods, such as divertor detachment and advanced divertor geometry are likely needed for the steady state operation of CFETR. |
| WOS关键词 | ELM ; PEDESTAL ; DESIGN ; ITER |
| 资助项目 | National Key R&D Program of China[2017YFE0300500] ; National Key R&D Program of China[2017YFE0300501] ; U.S. Department of Energy[DE-AC52-07NA27344] ; U.S. Department of Energy[DE-FC02-04ER54698] ; National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility[DE-AC02-05CH11231] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000606027200001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Key R&D Program of China ; U.S. Department of Energy ; National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/120062]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li, Zeyu |
| 作者单位 | 1.Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 2.Peking Univ, Fus Simulat Ctr, Beijing 100871, Peoples R China 3.Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA 4.Southwestern Inst Phys, POB 432, Chengdu 610041, Peoples R China 5.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China 6.Gen Atom, San Diego, CA 92186 USA 7.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Peoples R China 8.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA 9.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 10.Univ Calif San Diego, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Li, Zeyu,Zhu, Yiren,Xu, Guoliang,et al. Edge localized mode characteristics and divertor heat flux during stationary and transient phase for CFETR hybrid scenario[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2021,63. |
| APA | Li, Zeyu.,Zhu, Yiren.,Xu, Guoliang.,Chan, V. S..,Xu, Xueqiao.,...&Wang, Xiaogang.(2021).Edge localized mode characteristics and divertor heat flux during stationary and transient phase for CFETR hybrid scenario.PLASMA PHYSICS AND CONTROLLED FUSION,63. |
| MLA | Li, Zeyu,et al."Edge localized mode characteristics and divertor heat flux during stationary and transient phase for CFETR hybrid scenario".PLASMA PHYSICS AND CONTROLLED FUSION 63(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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