微尺度流动研究中的几个问题

SEVERAL QUESTIONS IN RESEARCH OF MICRO SCALE FLOW

本文综述了当前微尺度流动研究的进展，对由于尺度微小化所带来的有别于宏观尺度流动的一些问题进行了讨论．分析了在微尺度流动问题中必须注意的一些因素，例如，尺度划分与连续介质假设的适用范围，表面效应，稀薄性与压缩性的作用，以及流动通道壁面的影响．最后对今后的研究进行了展望．

This paper gives the review of the recent research of micro scale flows. Some problems different from those of the macro scale flows are discussed. Some important facts in the research of micro scale flows, for example, scaling and the valid range of the continuum model, effects of surface,rarefaction, compressibility and the wall of the flow channel, are analysized.