微尺度流动的扩展二阶滑移边界条件

工程热物理学报 , 2009, 30(8): 1383-1385.

1.华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074

2.华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074

3.华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074

基金项目: 教育部新世纪优秀人才支持计划(NCET-07-0323) 国家自然科学基金(50606012)

AN EXTENDED SECOND ORDER SLIP BOUNDARY CONDITION FOR MICRO FLOWS

本文提出了求解微流动Navier-Stokes方程的扩展二阶滑移边界条件.该边界条件依赖一个有效的分子平均自由程,并考虑了气体分子与壁面碰撞的影响,能够刻画Knudsen层内的流动.基于该边界条件,对微通道内的气体流动进行了研究,计算结果与实验数据和其他理论结果相吻合.

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