期刊
ANNALS OF NUCLEAR ENERGY
卷 152, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anucene.2020.107996
关键词
Check valve; Computational fluid dynamics; Dynamic mesh
资金
- Nuclear Safety Research Program through the Korea Foundation Of Nuclear Safety (KoFONS)
- Nuclear Safety and Security Commission (NSSC) of the Republic of Korea [1805007]
This study compared four different moving mesh techniques of CFD and found that these techniques can well describe the dynamic behavior of a swing check valve during closure, but there are differences in predicting the inflowing fluid velocity when the valve is fully closed.
The present study provides recommendations for choosing the appropriate moving mesh techniques of CFD to describe the dynamic behavior of a check valve and to evaluate a pressure build-up in response to the valve's closing behavior. Four different moving mesh techniques of CFD were modeled and compared, and the compressibility of the fluid was involved in simulating the pressure build-up by valve closing. The results showed that the swing check valve's dynamic behavior during the valve closure could be well described by the moving mesh techniques presented in this study because the velocity profiles at the outlet of each method were similar until the valve was almost closed. However, even though the moving mesh techniques described the check valve's closing behavior well, the predictions of the inflowing fluid velocity at the moment when the valve was fully closed were different from one another. (C) 2020 Published by Elsevier Ltd.
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