新型运载火箭射前预冷液氧贮箱热分层的数值研究

程向华 1; 厉彦忠 1; 陈二锋 1; 张化照 2

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新型运载火箭射前预冷液氧贮箱热分层的数值研究

专题研究 | 更新时间：2025-07-09

- 新型运载火箭射前预冷液氧贮箱热分层的数值研究
- Numerical Investigation of Thermal Stratification in Liquid Oxygen Tank for New-Style Launch Vehicle During Ground Precooling
- 西安交通大学学报 2008年42卷第9期页码：1132-1136
- 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：
  
  : 2007-11-29. 作者简介: 程向华(1978-),男,博士生;厉彦忠(联系人),男,教授,博士生导师. 基金项目:教育部高等学校博士学科点专项科研基金资助项目(20060698021)
- DOI：
  中图分类号： V421.33
- 网络首发：2008-09-10，
  
  纸质出版：2008
- 稿件说明：
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程向华 1, 厉彦忠 1, 陈二锋 1, 等. 新型运载火箭射前预冷液氧贮箱热分层的数值研究[J]. 西安交通大学学报, 2008,42(9):1132-1136.

Numerical Investigation of Thermal Stratification in Liquid Oxygen Tank for New-Style Launch Vehicle During Ground Precooling[J]. 2008, 42(9): 1132-1136.
程向华 1, 厉彦忠 1, 陈二锋 1, 等. 新型运载火箭射前预冷液氧贮箱热分层的数值研究[J]. 西安交通大学学报, 2008,42(9):1132-1136. DOI：

Numerical Investigation of Thermal Stratification in Liquid Oxygen Tank for New-Style Launch Vehicle During Ground Precooling[J]. 2008, 42(9): 1132-1136. DOI：

摘要

针对新型运载火箭液氧贮箱的热分层现象

采用计算流体力学(CFD)技术对液氧贮箱内部的物理场进行数值模拟

揭示了贮箱内部温度场及速度场的分布规律

并分析了液氧热分层的形成过程及原因.研究表明:回流口截面以上区域的传热以对流方式为主

底部区域则主要是逐层导热; 贮箱内部主体区域形成轴向温度分层

底部区域产生径向温度分层

最低温度区域偏移至底部封头右侧; 气枕区形成逆时针速度旋涡

液相主体区产生顺时针速度旋涡

贮箱底部由于流场影响产生逆时针速度旋涡.

Abstract

Aiming at the thermal stratification in liquid oxygen tank of new-style launch vehicle

a numerical investigation was performed for physical field of tank based on computational fluid dynamics(CFD)technique to depict the temperature distributions and velocity fields

and then to analyze the development of thermal stratification. The results show that the convection heat transfer plays an important role in the bulk above the return flow section

and heat conduction arises only in the bottom region. The axial thermal stratification is produced in the main range of tank and the radial stratification appears at the bottom

and the lowest temperature region moves towards the right of bottom header. The anticlockwise velocity vortex is formed in gas region while a clockwise vortex is presented in the area of liquid phase

whereas the velocity vortex in the bottom changes from clockwise to anticlockwise due to the transformation of flow field.

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references

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钟轶魁. 低温液体火箭发动机循环预冷模拟试验研究[D]. 杭州:浙江大学机械与能源学院,2003.

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