Large eddy simulation of unsteady flow in gas-liquid separator applied in thorium molten salt reactor

doi:10.1007/s41365-018-0411-3

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	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
刊名	NUCLEAR SCIENCE AND TECHNIQUES
	2018
卷号	29 期号:5 页码:-
关键词	Cylindrical Cyclones Swirling Flow Air-core Vortices
ISSN号	1001-8042
DOI	10.1007/s41365-018-0411-3
文献子类	期刊论文
英文摘要	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.
语种	英语
WOS记录号	WOS:000433263600002
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/29059]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Li, JJ 2.Qian, YL 3.Yin, JL 4.Li, H 5.Liu, W 6.Wang, DZ
推荐引用方式 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):-.