Study on Unsteady Heat Transfer Characteristic of Liquid Hydrogen Precooling Loop of Rocket Engine

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Study on Unsteady Heat Transfer Characteristic of Liquid Hydrogen Precooling Loop of Rocket Engine

更新时间：2025-07-09

- Study on Unsteady Heat Transfer Characteristic of Liquid Hydrogen Precooling Loop of Rocket Engine
- Vol. 44, Issue 5, Pages: 120-124(2010)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： V434.14
- Online First：10 May 2010，
  
  Published：2010
- 稿件说明：
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Study on Unsteady Heat Transfer Characteristic of Liquid Hydrogen Precooling Loop of Rocket Engine[J]. 2010, 44(5): 120-124.
DOI：

Study on Unsteady Heat Transfer Characteristic of Liquid Hydrogen Precooling Loop of Rocket Engine[J]. 2010, 44(5): 120-124. DOI：

摘要

针对液氢预冷火箭发动机自然循环回路的流动与传热过程

建立了一维非稳态均相模型来研究预冷过程中管路的温降特性.在膜态沸腾阶段引入过渡膜态沸腾

保证了弥散流膜态沸腾向反环状流膜态沸腾的合理过渡.一般流体的膜态沸腾起始壁温T

大于核态沸腾最高壁温T

CHF

而氢的T

小于T

CHF

使得氢的沸腾曲线不同于其他流体

造成计算时传热与流型转换的不连续

因此考虑以T

CHF

作为膜态沸腾起始壁温

以T

作为核态沸腾最高壁温

通过增加过渡沸腾区来确保计算顺利进行.计算发现:预冷过程中

回路管壁温沿流动方向表现出从高到低的逆向分布规律

最高壁温点位于反环状流向弥散流过渡区间处

最高壁温点位置随时间逐渐向下游推进.

Abstract

A set of one-dimensional unsteady homogenous models for flow and heat transfer process of a natural circulation precooling loop of a rocket engine is established to study the cool-down characteristic of the pipeline when liquid hydrogen flows in the pipeline. A transition filming boiling model is adopted to ensure the reasonable transition from dispersed filming boiling to inverted filming boiling. T

CHF

and T

are viewed as the onset temperature of film boiling and the temperature of critical heat flux

respectively

to achieve the continuity of heat transfer and flow regime transition in the calculation. The computing results show that the inverse temperature distribution exists at the loop along the flow direction during the precooling process. The maximum wall temperature is lo

cated at the transition from inverted flow to dispersed flow. In addition

the location of the maximum wall temperature moves downstream with time gradually.

关键词

Keywords

references

陈二锋,厉彦忠,程向华. 液体火箭发动机自然循环预冷回路的数值研究[J]. 航空动力学报,2009,24(3):698-704.

CHEN Erfeng, LI Yanzhong, CHENG Xianghua. Numerical studies on natural circulation precooling loop of cryogenic liquid rocket engine[J]. Journal of Aerospace Power, 2009, 24(3): 698-704.

陈二锋,厉彦忠,程向华,等. 液体火箭发动机自然循环回路预冷非稳态数值研究[J]. 西安交通大学学报,2008,42(9):1127-1131.

CHEN Erfeng, LI Yanzhong, CHENG Xianghua, et al. Unsteady mathematic models of natural circulation loop precooling of liquid rocket engine[J]. Journal of Xi'an Jiaotong University, 2008, 42(9): 1127-1131.

陈国邦,郑锡亮,钟秩魁,等. 低温液体火箭发动机模拟预冷过程的传热与压降[J]. 低温工程, 2002(3): 1-10.

CHEN Guobang, ZHENG Xiliang, ZHONG Zhikui, et al. Heat transfer and pressure drop during the modeling precooling test of a cryogenic liquid rocket engine[J].Cryogenics, 2002(3): 1-10.

LIAO Jun. Modeling two-phase transport during cryogenic chilldown in a pipeline[D]. Gainesville, Florida, USA: University of Florida. Mechanical Engineering, 2005.

HEDAYATPOVR A. Transient two-phase flow of cryogenic fluid in a vertical transfer line during the cool-down process[D]. Knoxiville, Tennessee, USA: University of Tennessee. Mechanical Engineering, 1990.

YUAN Kun, JI Yan, CHUNG J N. Numerical modeling of cryogenic chilldown process in terrestrial gravity and microgravity[J]. International Journal of Heat and Fluid Flow, 2009, 30(1): 44-53.

张育林,刘昆,程谋森. 液体火箭发动机动力学理论与应用[M]. 北京:科学出版社, 2005.

HAMMOUDA N, GROENEVELD D C, CHENG S C. Two-fluid modeling of inverted annular film boiling[J]. International Journal of Heat and Mass Transfer, 1997, 40(11): 2655-2670.

鲁钟琪. 两相流与沸腾传热[M]. 北京:清华大学出版社, 2002.

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Related Institution

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University

College of Nuclear Science and Technology, Harbin Engineering University

State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University

School of Energy and Power Engineering, Xi’an Jiaotong University

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