摘要：One wedge-shaped microchannel was established,and the hydrodynamic properties of the wedge-shaped gas film were comprehensively investigated.The Navier-Stokes equations coupled with the full energy equation were adopted to mainly analyze the lubrication hydrodynamics of the gas film,as the horizontal plate was viewed as the adiabatic wall or the horizontal plate temperature was equal to the tilt plate temperature.A higher gas film temperature strengthened the rarefaction effect,and the more rarefied gas weakened the squeeze.Meanwhile,the vertical flow across the gas film could indicate the relation between the velocity vector and the gas film squeeze and expansion.The adiabatic horizontal plate could resist the heat conduction and enhance the rarefaction effect,and thus the direction of motion of the gas molecules was easier to be changed.

关键词：equations adiabatic horizontal plate film 

单位：School; of; Energy; and; Power; Engineering; North; University; of; China; Taiyuan; Shanxi; 030051; China; Key; Laboratory; of; Low-grade; Energy; Utilization; Technologists; and; Systems; of; Ministry; of; Education; College; of; Power; Engineering; Chongqing; University; Chongqing; 400030; China