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IMPLEMENTATION OF VELOCITY SLIP MODELS IN A FINITE ELEMENT NUMERICAL CODE FOR MICROSCALE FLUID SIMULATIONS  

Hoang, A.D. (경상대학교 대학원 기계항공공학부 항공우주공학)
Myong, R.S. (경상대학교 기계항공공학부 및 항공기부품기술연구소)
Publication Information
Journal of computational fluids engineering / v.14, no.2, 2009 , pp. 46-51 More about this Journal
Abstract
The slip effect from the molecular interaction between fluid particles and solid surface atoms plays a key role in microscale fluid transport and heat transfer since the relative importance of surface forces increases as the size of the system decreases to the microscale. There exist two models to describe the slip effect: the Maxwell slip model in which the slip correction is made on the basis of the degree of shear stress near the wall surface and the Langmuir slip model based on a theory of adsorption of gases on solids. In this study, as the first step towards developing a general purpose numerical code of the compressible Navier-Stokes equations for computational simulations of microscale fluid flow and heat transfer, two slip models are implemented into a finite element numerical code of a simplified equation. In addition, a pressure-driven gas flow in a microchannel is investigated by the numerical code in order to validate numerical results.
Keywords
Microscale Gases; Slip Models; Finite Element Method;
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Times Cited By KSCI : 1  (Citation Analysis)
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