中国空间科学技术

中国空间科学技术 ›› 2014, Vol. 34 ›› Issue (5): 64-70,78.doi: 10.3780/j.issn.1000-758X.2014.05.009

• 技术交流 • 上一篇    下一篇

相变装置二维方腔内空穴分布规律研究

 菅鲁京, 张加迅, 赵欣, 霍玉华   

  1. （空间热控技术北京市重点实验室，北京100094）
  • 收稿日期:2014-01-08 修回日期:2014-04-25 出版日期:2014-10-25 发布日期:2014-10-25
  • 作者简介:菅鲁京 1980年生，2009年获中国空间技术研究院飞行器设计专业博士学位，工程师。研究方向为航天器热设计及热分析技术。

Study on Void Distribution Rule in Two-dimensional Quadrate Cavity of PCM Container

 JIAN  Lu-Jing, ZHANG  Jia-Xun, ZHAO  Xin, HUO  Yu-Hua   

  1. (BeijingKeyLaboratoryofSpaceThermalControlTechnology,Beijing100094)
  • Received:2014-01-08 Revised:2014-04-25 Published:2014-10-25 Online:2014-10-25

PDF (PC)

1353

被引次数

1

摘要： 为了解微重力条件下空穴对相变传热过程的影响，在焓法的基础上增加了基于温度排序算法的空穴模型，在求解过程分析了温度场和空穴之间的相互作用；建立了相变装置的二维模型；研究了空穴在周期外热流条件下的移动规律。结果表明，从初始时刻到第8个轨道周期，低温区空穴逐渐消失并在高温区出现，空穴沿等温线方向扩散并最终积聚在高温边界附近，空穴的移动使传热路径上的热阻增大，导致相变装置冷热边界的传热温差增加了3℃。

关键词: 固液相变, 二维模型, 方腔, 空穴, 热控, 航天器

Abstract: To study the influence of the void on phase change heat transfer process under microgravity, the void model using temperature sorting algorithm was built based on the enthalpy method, which can simulate the interaction between the void and the temperature distribution. The 2D model of phase change material container was built to study the void migration rule under the periodical heat flux boundary condition. The results show that from the initial time to the 8th period the void disappears gradually in the low temperature region and appears in the high temperature region. The void moves to the high temperature region and diffuses along the isotherms. The void migration increases heat resistance along the heat transfer route and the temperature difference about 3℃ between cold and hot boundaries.

Key words: Solid-liquidphasechange, 2Dmodel, Quadratecavity, Void, Thermalcontrol, Spacecraft