| 液体火箭发动机液氧箱与预冷回路的耦合计算模型 |
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| 引用本文： | 祝银海,姜培学,杨炜平,徐珊姝. 液体火箭发动机液氧箱与预冷回路的耦合计算模型[J]. 工程热物理学报, 2012, 0(5): 835-838 |
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| 作者姓名： | 祝银海 姜培学 杨炜平 徐珊姝 |
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| 作者单位： | 热科学与动力工程教育部重点实验室清华大学热能工程系;北京宇航系统工程研究所 |
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| 摘 要： | 建立了液体火箭发动机的液氧贮箱与底部预冷回路的数值计算耦合模型,模拟了地面停放过程中贮箱与底部预冷回路的三维非稳态两相流动与传热过程,分析了自然循环预冷条件下液氧贮箱和底部预冷回路中的三维物理场分布及随时间变化规律。结果表明:随着停放时间的增加,液氧的蒸发量增加,停放中后期贮箱内的热传递基本趋于稳定。回流管内的气化导致回流口处的温度一直呈现波动。
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| 关 键 词： | 液体火箭 发动机 液氧贮箱 循环预冷 建模 |
Numerical Investigation of Transpiration Cooling Coupled With Combustion in the Thrust Chamber of Liquid Rocket |
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| ZHU Yin-Hai,JIANG Pei-Xue,YANG Wei-Ping,XU Shan-Shu. Numerical Investigation of Transpiration Cooling Coupled With Combustion in the Thrust Chamber of Liquid Rocket[J]. Journal of Engineering Thermophysics, 2012, 0(5): 835-838 |
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| Authors: | ZHU Yin-Hai JIANG Pei-Xue YANG Wei-Ping XU Shan-Shu |
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| Affiliation: | 1 (1.Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Thermal Engineering,Tsinghua University,Beijing 100084,China; 2.Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China) |
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| Abstract: | A 3D CFD model of the liquid oxygen tank with a natural recirculation cooling loop was established.The unsteady two-phase flow and heat transfer in the tank and bottom loop was numerically investigated.The mass fraction,pressure and temperature fields in the tank were analyzed under different natural recirculation cooling conditions.Results showed that the evaporation of liquid oxygen increased with the test time.The heat transfer process became steady at the end of test time.The fluid temperature at the loop exit fluctuated due to the evaporation in the bottom loop. |
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| Keywords: | liquid rocket engine liquid oxygen tank recirculation cooling modeling |
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