摘要
为了揭示两相闭式热虹吸管(重力热管)蒸发段及冷凝段工质相变传热本质,以其为基础建立数值模型,并基于流体体积函数(VOF)模型确定气液两相间的相界面,对采用工质水和R134a的热管运行过程进行数值分析。研究结果表明:多相流模型对热管内部的蒸发冷凝过程模拟较好,可以直观地再现热管内部的传热传质过程。
The numerical model based on the two-phase closed thermosyphon （TP（ST, which is also called gravity heat pipe） is established to describe its phase change and heat transfer essence of the evaporation and condensation. The volume of fluid （VOF） model is used to describe the interface between vapor and liquid phases, and the working process of the heat pipe using water and R134a as working fluids is analyzed by simulation. The study results show that the multiphase model can successfully simulate the evaporation and condensation in the heat pipe better, which directly reflects the heat and mass transfer process.
出处
《制冷与空调》
2017年第9期17-21,共5页
Refrigeration and Air-Conditioning
基金
陕西省国际科技合作重点项目(2014KW09-01)
关键词
重力热管
VOF
相变
相界面
gravity heat pipe
VOF
phase change
phase interface
