Model of the onset of liquid entrainment in large branch T-junction with the consideration of surface tension

Ping Liu; Geyu Shen; Xiaoyu Li; Jinchen Gao; Zhaoming Meng

doi:https://doi.org/10.1016/j.net.2020.09.002

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자료유형: 학술저널

저자정보: Ping Liu (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering Univ) Geyu Shen (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering Univ) Xiaoyu Li (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering Univ) Jinchen Gao (Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering Univ) Zhaoming Meng (Harbin Engineering University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제3호

발행연도: 2021.3

수록면: 804 - 811 (8page)

DOI: https://doi.org/10.1016/j.net.2020.09.002

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The T-junction exists widely in industrial engineering, especially in nuclear power plants, which plays animportant part in nuclear power reactor thermal-hydraulics. However, the existing prediction models ofthe liquid entrainment are mainly based on the small branches or small breaks while there are a fewresearches for large branches (d/D > 0.2). Referring to the classical models about the onset of liquidentrainment of the T-junction, most of previous models regard liquid as ideal working fluid and ignoresurface tension. This paper aims to study the effect of surface tension on the liquid entrainment, anddevelops an improved model based on the reasonable assumption. The establishment of new modelemploys the methods of force analysis, dimensional analysis. Besides, the dimensionless Weber numberis adopted innovatively into the model to show the effect of surface tension. What is more, in order tovalidate the new model, three kinds of working fluids with different surface tensions are creativelyadopted in the experiments: water, silicone oil and ethyl alcohol. The final results show that surfacetension has a nonnegligible effect on the onset of liquid entrainment in large branch T-junction. The newmodel is well matched with the experimental data.

#T-junction #Liquid entrainment #Surface tension

참고문헌 (17)

참고문헌 신청

Z.M. Meng / 2015 / Research of Entrainment at T-Junction in Large Advanced PWR

Z. M. Meng / 2014 / Entrainment at T-junction : a review work / Prog. Nucl. Energy 70:221~241

N. Zuber / 1980 / Problems in Modeling of Small Break LOCA

C. Smoglie / 1987 / Two-phase flow through small branches in a horizontal pipe with stratified flow / Nucl. Eng. Des 99:117~130

Y. M. Moon / 2003 / Off-take and slug transition at T-junction of vertical-up branch in the horizontal pipe / Nucl. Sci. Technol 40(5):317~324

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Ping Liu

소속기관 Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering Univ