滑移流区微环缝通道单侧等壁温加热下的换热

对滑移流区微环缝槽道中单独内侧及单独外侧等壁温加热条件下的换热特性进行了理论研究，求解了带温度跳跃边界条件的能量方程，讨论了稀薄效应，内外戏比对等壁温加热条件下微环缝槽道内换热特性的影响，结果表明：滑移流区微环缝通道内的Nu数明显低于连续流区，且随着Kn数的增加，Nu数减小；Nu数随内外径比r^*的变化趋势与连续流区相似。

Analysis for Heat Transfer in Micro-annular Channel with Unsymmetrically Heated Walls in Slip Flow Regime

A theoretical analysis is presented for heat transfer in micro-annular channel with an adiabatic wall and a heated wall with uniform wall temperature in slip flow regime. The energy equations with the boundary conditions of temperature jump are solved for the hydrodynamical and thermal fully developed laminar flow of the incompressible fluid in this microchannel. The influences of the Kn number, the ratio of inner diameter to outer diameter on the heat transfer characteristics are discussed respectively. The results show that the Nusselt number in microchannel decreases with the increasing of Kn number comparing with that in macrochannel.