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3rd Thermal and Fluids Engineering Conference (TFEC)

ISSN: 2379-1748

Research on Characteristics of Pressure Oscillation Amplitude due to Double- Hole Steam Jet Submerged in Subcooled Water

Weixiong Chen
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China

Chenxi Huang
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Yingchun Wang
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China; Shanxi Institute of Energy, Taiyuan 030600, China

Lutao Wang
Xi'an Jiaotong University, 28 Xian Ning Rd. Xi'an 710049, China

Daotong Chong
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China

Junjie Yan
State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy & Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. of China

DOI: 10.1615/TFEC2018.mph.020939
pages 1727-1733


KEY WORDS: Double-hole nozzle, Pressure oscillation, Amplitude characteristics

Abstract

Multi-hole steam jet condensation in subcooled water is widely used in nuclear reactor safety system. Pressure oscillations caused by steam jet condensation during the pressure relief process can do damage the water tank and surrounding equipment. In present study, the experimental study on pressure oscillation amplitude of the steam discharged from 8mm double-hole into the subcooled water was carried out, while the water temperature ranged from 20 to 65°C and steam mass flux ranged from 300 to 700 kg·m-2·s-1. In the stable condensation zone, the pressure oscillation amplitude firstly increased and then decreased with the axial dimensionless distance and there were obvious peak points. The pressure oscillation amplitude increased with the rise of water temperature, while decreased within the water temperature 55-60°C. Pressure oscillation amplitude of double-hole 1.2 increased firstly and then decreased with steam mass flux increasing, while the pressure oscillation amplitude of double-hole 1.5 and 2.0 decreased firstly and then increased with steam mass flux increasing. When steam mass flow rate was constant, the pressure oscillation amplitude under different water temperature decreased firstly and then increased along with the increase of hole pitch.

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