Numerical Study on Mixing Condensation Characteristics of High Temperature Oxygen Enriched Gas in Pipe Between Turbopump for Liquid Oxygen/Kerosene Staged Combustion Cycle Engines 液氧煤油补燃发动机泵间管路高温富氧燃气掺混冷凝特性数值研究

Xie，Fu Shou1; Du，Fei Ping2; Wang，Xiao Feng2; Zhu，Kang3; Lan，Xiao Gang4; Li，Yan Zhong1

2021-07-01

10.13675/j.cnki.tjjs.200633

推进技术   影响因子和分区

1001-4055

Aiming at mixing condensation phenomenon of high temperature oxygen enriched gas in a pipe between a reloading pump and a main pump for liquid oxygen/kerosene staged combustion cycle engines, a full three-dimension numerical calculation method on mixing condensation characteristics of oxygen enriched gas and liquid oxygen two phase-flow under large super-heat degree was developed. Experiment study of gas-liquid mixing condensation with refrigerant R123 as working medium was conducted to verify accuracy and reliability of the numerical model. Calculated results show that lateral relative flow of the gas-liquid two-phase occurs in the elbow section under the action of centrifugal force, which enhances the heat and mass transfer between the two phases. Under lower liquid velocity of 1m/s, a local gas cavity connected with the gas hole is formed after the high temperature oxygen enriched gas is injected into the pipe horizontally. When the gas injection rate is lower than 80m/s, one side of the gas cavity is attached to the inner wall of the pipe. When the gas injection rate exceeds 100m/s, the gas cavity could leave the inner wall of the pipe. The gas phase is torn into discrete bubbles at the lower end of the gas cavity and it gradually condenses with the liquid flowing downstream. As a result, it is found that the oxygen enriched gas in the outlet of pipe is not fully re-liquified in this actual working condition, and this flow state may cause cavitation effect on the main liquid oxygen pump.

Large superheat degree Mixing condensation Oxygen enriched gas Reliquification Staged combustion cycle engines

EI

中文

其他

20212810622522

Combustion ; Condensation ; Engines ; High temperature operations ; Liquefied gases ; Mass transfer ; Mixing ; Numerical methods ; Oxygen ; Pumps ; Two phase flow

Pumps:618.2 ; Fluid Flow, General:631.1 ; Mass Transfer:641.3 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Numerical Methods:921.6

2-s2.0-85109453139

Scopus

1.School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an,710049,China
2.Science and Technology on Liquid Rocket Engine Laboratory,Xi'an Aerospace Propulsion,Xi'an,710100,China
3.Institute of Technology,Southern University of Science and Technology,Shenzhen,518000,China
4.Shanghai Lanbin Petrochemical Equipment Co.,Ltd.,Shanghai,201518,China

Xie，Fu Shou,Du，Fei Ping,Wang，Xiao Feng,等. Numerical Study on Mixing Condensation Characteristics of High Temperature Oxygen Enriched Gas in Pipe Between Turbopump for Liquid Oxygen/Kerosene Staged Combustion Cycle Engines 液氧煤油补燃发动机泵间管路高温富氧燃气掺混冷凝特性数值研究[J]. 推进技术,2021,42(7):1544-1552.

Xie，Fu Shou,Du，Fei Ping,Wang，Xiao Feng,Zhu，Kang,Lan，Xiao Gang,&Li，Yan Zhong.(2021).Numerical Study on Mixing Condensation Characteristics of High Temperature Oxygen Enriched Gas in Pipe Between Turbopump for Liquid Oxygen/Kerosene Staged Combustion Cycle Engines 液氧煤油补燃发动机泵间管路高温富氧燃气掺混冷凝特性数值研究.推进技术,42(7),1544-1552.

Xie，Fu Shou,et al."Numerical Study on Mixing Condensation Characteristics of High Temperature Oxygen Enriched Gas in Pipe Between Turbopump for Liquid Oxygen/Kerosene Staged Combustion Cycle Engines 液氧煤油补燃发动机泵间管路高温富氧燃气掺混冷凝特性数值研究".推进技术 42.7(2021):1544-1552.