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 ex-plain the experimenta...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 ex-plain the experimental results different from those predicted by conventional theory. Heat transfer in microrchannels under the uniform heat flux is also analyzed. It is found that velocity-jump and temperature-jump have an opposite innuence and Nusselt number has a greater ralue when the Knud-sen number is very small. With the increasing of Knudsen Number, Nusselt number became smaller than 8.24.展开更多
文摘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 ex-plain the experimental results different from those predicted by conventional theory. Heat transfer in microrchannels under the uniform heat flux is also analyzed. It is found that velocity-jump and temperature-jump have an opposite innuence and Nusselt number has a greater ralue when the Knud-sen number is very small. With the increasing of Knudsen Number, Nusselt number became smaller than 8.24.
