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Title: Numerical study of fluid transient in pipes with air entrainment
Authors: Lee, T.S. 
Low, H.T. 
Huang, W.D.
Keywords: Air entrainment
Pressure transient
Two-phase flow
Issue Date: Jul-2004
Citation: Lee, T.S., Low, H.T., Huang, W.D. (2004-07). Numerical study of fluid transient in pipes with air entrainment. International Journal of Computational Fluid Dynamics 18 (5) : 381-391. ScholarBank@NUS Repository.
Abstract: The four-equation two-fluid model of two-component flow has been developed to study the effects of air entrainment and air release on the pressure transient due to the rapid valve closure. A nearly-implicit hydrodynamic numerical scheme is applied. Numerical experiments show that entrained, entrapped and released gases decrease the pressure wave frequency, produce asymmetric pressure surges with respect to the static pressure and result in the difference between up-surge duration and down-surge duration. These results are consistent with the experimental and field data observed by other investigators. A decrease in pressure peaks is also discovered in the given conditions.
Source Title: International Journal of Computational Fluid Dynamics
ISSN: 10618562
DOI: 10.1080/1061856021000043887
Appears in Collections:Staff Publications

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