Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Large eddy simulation of unsteady flow in gas-liquid separator applied in thorium molten salt reactor | |
| Li, JJ; Qian, YL; Yin, JL; Li, H; Liu, W; Wang, DZ | |
| 2018 | |
| Source Publication | NUCLEAR SCIENCE AND TECHNIQUES
 |
| ISSN | 1001-8042 |
| Volume | 29Issue:5Pages:- |
| Subtype | 期刊论文 |
| Abstract | Axial gas-liquid separators have been adopted in fission gas removal systems for the development of thorium molten salt reactors. In our previous study, we observed an unsteady flow phenomenon in which the flow pattern is directly dependent on the backpressure in a gas-liquid separator; however, the underlying flow mechanism is still unknown. In order to move a step further in clarifying how the flow pattern evolves with a variation in backpressure, a large eddy simulation (LES) was adopted to study the flow field evolution. In the simulation, an artificial boundary was applied at the separator outlet under the assumption that the backpressure increases linearly. The numerical results indicate that the unsteady flow feature is captured by the LES approach, and the flow transition is mainly due to the axial velocity profile redistribution induced by the backpressure variation. With the increase in backpressure, the axial velocity near the downstream orifice transits from negative to positive. This change in the axial velocity sign forces the unstable spiral vortex to become a stable recti- linear vortex. |
| Keyword | Cylindrical Cyclones Swirling Flow Air-core Vortices |
| DOI | 10.1007/s41365-018-0411-3 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000433263600002 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/29059 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Affiliation | 1.Li, JJ 2.Qian, YL 3.Yin, JL 4.Li, H 5.Liu, W 6.Wang, DZ |
| Recommended Citation GB/T 7714 | Li, JJ,Qian, YL,Yin, JL,et al. Large eddy simulation of unsteady flow in gas-liquid separator applied in thorium molten salt reactor[J]. NUCLEAR SCIENCE AND TECHNIQUES,2018,29(5):-. |
| APA | Li, JJ,Qian, YL,Yin, JL,Li, H,Liu, W,&Wang, DZ.(2018).Large eddy simulation of unsteady flow in gas-liquid separator applied in thorium molten salt reactor.NUCLEAR SCIENCE AND TECHNIQUES,29(5),-. |
| MLA | Li, JJ,et al."Large eddy simulation of unsteady flow in gas-liquid separator applied in thorium molten salt reactor".NUCLEAR SCIENCE AND TECHNIQUES 29.5(2018):-. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Large eddy simulatio（1912KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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