航天器工程2024，Vol.33Issue(1)：84-91,8.DOI:10.3969/j.issn.1673-8748.2024.01.012
航天器用水热管冻结特性数值模拟研究
Numerical Simulation Study on Freezing Characteristics of Water Heat Pipe Used for Spacecraft
牟玉鹏 1刘剑术 1李小斌 1张红娜 1李凤臣 1韩冶 2王泽鸣 2柴宝华2
作者信息
- 1. 天津大学 先进内燃动力全国重点实验室,天津 300350||天津大学 机械工程学院,天津 300350
- 2. 中国原子能科学研究院,北京 102413
- 折叠
摘要
Abstract
Heat pipes have important applications in space exploration project and are important thermal conductive elements of spacecraft.In this paper,by introducing the capillary momentum source term,the working characteristics and possible freezing process of a water heat pipe at de-sign and low power working conditions are numerically investigated.The results show that when the water heat pipe works at the design working condition,there is a shear effect on the surface of the vapor and the liquid film,and the temperature of the heat pipe decreases along the axial direc-tion,and the maximum temperature difference in the axial direction does not exceed 3 K,which has good isothermality.At the low power working condition,the temperature of the condenser section of the heat pipe reduces below the melting point of the working fluid.The working fluid is frozen and deposited,and the low temperature zone gradually spreads to the end of the con-denser section,where the frozen deposition finally blocks the wick.Thus,the heat pipe no longer maintains the isothermality and the heat transfer ability,resulting in failure.This study result provides a reference for the long-term stable operation design of heat pipe,and provides a scien-tific reference for the successful guarantee of space exploration project.关键词
航天器用水热管/低功率工况/毛细流动/冻结沉积Key words
water heat pipe used for spacecraft/low power condition/capillary flow/frozen deposi-tion分类
能源与动力引用本文复制引用
牟玉鹏,刘剑术,李小斌,张红娜,李凤臣,韩冶,王泽鸣,柴宝华..航天器用水热管冻结特性数值模拟研究[J].航天器工程,2024,33(1):84-91,8.
