Determination of Slip Length in Couette Flow Based on an Analytical Simulation Incorporating Surface Interaction
Xin Zhao, Chao Wei** , Shi-Hua Yuan
Science and Technology on Vehicle Transmission Laboratory, Beijing Institute of Technology, Beijing 100081
Abstract ：An analytical simulation based on a new model incorporating surface interaction is conducted to study the slip phenomenon in the Couette flow at different scales. The velocity profile is calculated by taking account of the micro-force between molecules and macro-force from the viscous shearing effect, as they contribute to the achievement of the slip length. The calculated results are compared with those obtained from the molecular dynamics simulation, showing an excellent agreement. Further, the effect of the shear rate on the slip is investigated. The results can well predict the fluid flow behaviors on a solid substrate, but has to be proved by experiment.
收稿日期: 2016-09-12
出版日期: 2017-02-28
:
47.10.A-
(Mathematical formulations)
47.15.St
(Free shear layers)
47.61.Fg
(Flows in micro-electromechanical systems (MEMS) and nano-electromechanical systems (NEMS))
47.85.ld
(Boundary layer control)
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2017, Vol. 34 
