Simulation Study for the Influences of Fluid Physical Properties on Void Fraction of Moderator Cell of Cold Neutron Source

LI Xiao-ming; BI Qin-cheng; FENG Quan-ke; CHEN Ting-kuan; DU She-jiao

Oct. 2004

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Article Navigation > Nuclear Power Engineering > 2004 > 25(5): 421-425

LI Xiao-ming, BI Qin-cheng, FENG Quan-ke, CHEN Ting-kuan, DU She-jiao. Simulation Study for the Influences of Fluid Physical Properties on Void Fraction of Moderator Cell of Cold Neutron Source[J]. Nuclear Power Engineering, 2004, 25(5): 421-425.

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Simulation Study for the Influences of Fluid Physical Properties on Void Fraction of Moderator Cell of Cold Neutron Source

1. School of Energy and Power Engineering,Xi抋n Jiaotong University,Xian,710049,China; 2. State Key Laboratory of Multiphase Flow in Power Engineering,Xi抋n Jiaotong University,Xian,710049,China

Received Date: 2004-02-27
Rev Recd Date: 2004-03-26

Abstract

Abstract

The void fraction at different heights in the annular channel of moderator cell mockup was measured with a differential pressure transducer. The tests proved that the ratio of surface tension to density of liquid phase is the main factor that determines the physical properties on void fraction. The larger the ratio, the smaller the void fraction. The ratio of surface tension to density of Freon 113 is lower than that of liquid hydrogen. Therefore, Freon 113 can be used as working fluid to study the void fraction in the hydrogen two-phase thermo-siphon loop in the cold neutron source （CNS） of China Advanced Research Reactor （CARR）), and the results are conservative.
- Cold neutron source,
- Moderator cell,
- Void fraction,
- Surface tension,
- Density