Highly underexpanded helium jet and its effect on dust resuspension under in-vessel loss of coolant accident of fusion reactor
文献类型：期刊论文
| 作者 | Qin, Zhijie1,2; Zhang, Shichao2; Wang, Zhen2 ; Chen, Zhibin2; Li, Taosheng2
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 62 |
| ISSN号 | 0029-5515 |
| 关键词 | in-vessel LOCA highly underexpanded jet Mach disk friction velocity |
| DOI | 10.1088/1741-4326/ac7df0 |
| 通讯作者 | Zhang, Shichao(shichao.zhang@inest.cas.cn) |
| 英文摘要 | During an in-vessel loss of coolant accident (LOCA) of a helium-cooled blanket in a fusion reactor, the high-pressure helium gas ingress into the vacuum vessel (VV) will produce highly underexpanded jet, resulting in the resuspension and migration of the radioactive dust deposited in the VV. In this study, the flow field in the VV and the influence of friction velocity were simulated and analyzed by using ANSYS Fluent code. In addition, the differences between in-vessel LOCA and loss of vacuum accident (LOVA) were compared. The results showed that the pressure of the VV reaches the pressure relief limit of the VV pressure suppression system rapidly after a LOCA. With the development of a LOCA, the Mach disk continued to move towards the equatorial break of the VV, its shape continued to shrink and the number of structures gradually increased. Compared with the LOVA, the LOCA had a higher friction velocity, resulting in a greater probability of dust resuspension and radioactive risk. |
| WOS关键词 | NUMERICAL-ANALYSIS ; WAVE |
| 资助项目 | National Key Research and Development Program of China[2019YFE0191600] ; National Natural Science Foundation of China[51906249] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000843301900001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/132025]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Shichao |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei Inst Phys Sci, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Zhijie,Zhang, Shichao,Wang, Zhen,et al. Highly underexpanded helium jet and its effect on dust resuspension under in-vessel loss of coolant accident of fusion reactor[J]. NUCLEAR FUSION,2022,62. |
| APA | Qin, Zhijie,Zhang, Shichao,Wang, Zhen,Chen, Zhibin,&Li, Taosheng.(2022).Highly underexpanded helium jet and its effect on dust resuspension under in-vessel loss of coolant accident of fusion reactor.NUCLEAR FUSION,62. |
| MLA | Qin, Zhijie,et al."Highly underexpanded helium jet and its effect on dust resuspension under in-vessel loss of coolant accident of fusion reactor".NUCLEAR FUSION 62(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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