NDLI: Simulation of Flow and Heat Transfer in Micro Couette Flow

Content Provider	IEEE Xplore Digital Library
Author	Fu-bing Bao Jian-zhong Lin Xing Shi
Copyright Year	2006
Description	Author affiliation: State Key Lab. of Fluid Power Transmission & Control, Zhejiang Univ., Hangzhou (Fu-bing Bao; Jian-zhong Lin)
Abstract	The flow characteristics and heat transfer in micro couette flow were studied numerically using three methods: Burnett equations, direct simulation Monte Carlo (DSMC) method and information preservation (IP) method. The results of these three methods are compared to each other. Convergent solutions to the conventional Burnett equations with second order velocity-slip and temperature-jump boundary conditions were obtained on arbitrary fine numerical grids for all Knudsen numbers (Kn) up to the limit of the equations' validity. The non-dimensional wall shear stress and heat flux shows good agreement with DSMC results and are better than first order slip boundary condition. The velocity slip and temperature jump calculated from Burnett equations fit DSMC results well when Kn < 0.3 but departure at higher Kn number. The IP method shows an identical velocity distribution with DSMC at low speed, but costs much less time. Perfect agreement was achieved in the density, velocity, temperature and pressure distributions between the results of Burnett equations and IP method at Kn = 0.02 and 0.1. Burnett equations and IP method are better than Navier-Stokes equation and DSMC method, respectively, in the flow and heat transfer in MEMS or NEMS systems
Starting Page	110
Ending Page	115
File Size	5828111
Page Count	6
File Format	PDF
ISBN	1424401399
DOI	10.1109/NEMS.2006.334650
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heat transfer Navier-Stokes equations Micromechanical devices Boundary conditions Stress Nanoelectromechanical systems Power engineering and energy Heat engines Monte Carlo methods Computational modeling Couette flow Burnett equations DSMC method IP method MEMS
Content Type	Text
Resource Type	Article

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