摘要
本文采用局部非热平衡模型对发汗冷却过程中多孔壁面内的换热和流动进行了数值模拟,分析了影响多孔介质内固体骨架与流体的温度及温差分布的因素,研究了这些因素对发汗冷却过程的影响规律．计算结果表明：增大固体骨架的导热系数、增大冷却剂流速或者加强冷端换热有利于提高发汗冷却效率．
Convection heat transfer in porous wall with transpiration cooling was investigated numerically using Local Thermal Non-Equilibritun Model. The factors influencing the solid and fluid temperatures and the temperature difference between the solid and fluid phases in porous wall were analyzed, and the effects of these factors on transpiration cooling were investigated. The results showed that increasing solid thermal conductivity and coolant mass flow rate and convection heat transfer in the inlet of coolant can improve the performance of transpiration cooling.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2007年第2期286-288,共3页
Journal of Engineering Thermophysics
基金
清华大学基础研究基金(No.JCpy2005049)资助
关键词
发汗冷却
多孔介质
局部非热平衡模型
数值模拟
transpiration cooling
porous media
local thermal non-equilibrium
numerical simulation
