Heat and Monentum Transport in Micro—Channels

Effect of velocity jump and temperature jump on the heat and momentum transfer in micro-domains is discussed in detail.A simulation aided by locally fully developed assumption is developed to explain the experimental results different from those predicted by conventional theory.Heat transfer in micro-channels under the uniform heat flux is also analyzed.It is found that velocity-jump and temperature-jump have an opposite influence and Nusselt number has a greater value when the Knudsen number is very small,With the increasing of Knudsen Number,Nussqlt number became smaller than 8.24.