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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 PublicationNUCLEAR SCIENCE AND TECHNIQUES
ISSN1001-8042
Volume29Issue:5Pages:-
Subtype期刊论文
AbstractAxial 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.
KeywordCylindrical Cyclones Swirling Flow Air-core Vortices
DOI10.1007/s41365-018-0411-3
Indexed BySCI
Language英语
WOS IDWOS:000433263600002
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/29059
Collection中科院上海应用物理研究所2011-2018年
Affiliation1.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):-.
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