摘要
在已求得贴壁层内气体粘度和导热系数变化的基础上，求解了微槽内气体完全发展的二维层流换热．得到两表面等热流、且ｑ１＝ｑ２＝ｑ以及一表面等热流、另一表面绝热条件下的温度分布和对流换热系数．
A theoretical investigation was performed on the laminar heat transfer of gases througha microchannel between two parallel plates. The investigation was done for two conditionsrespectively: (1) one plate heat insulated and the other under constant heat flux, (2) boththe two plates under constant heat flux. Considering the change in thermal conductivity andthe viscosity of gas vs the distance from the wall surface derived from the kinetic theory ofgases, the mathematical models including this wall--adjacent effect were built for both thetwo conditions. Analytical expressions for temperature profiles and heat transfer coefficientswere derived and the numerical results were discussed briefly.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1999年第2期194-198,共5页
Journal of Engineering Thermophysics
关键词
微槽
贴壁层
气体
层流换热
传热
wall--adjancent layer, microchannels, gast laminar heat transfer
