Volume 67, Number 4, August 2004
|Page(s)||600 - 606|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 August 2004|
A lattice Boltzmann BGK model for simulation of micro flows
Department of Mechanical Engineering, National University of Singapore 10 Kent Ridge Crescent, Singapore 119260
Corresponding author: email@example.com
Accepted: 14 June 2004
We propose a lattice Boltzmann BGK model for simulation of micro flows. This model is based on the kinetic theory and the entropic lattice Boltzmann method (S. Ansumali and I. V. Karlin, J. Stat. Phys. 107 (2002) 291) but the relaxation time is re-defined in terms of the Knudsen number, and a diffuse-scattering boundary condition (DSBC) is adopted to consider the velocity slip at the wall. Simple theoretical analysis and numerical validation show that the proposed model gives good predictions of the micro fluidic behaviors.
PACS: 47.45.-n – Rarefied gas dynamics
© EDP Sciences, 2004
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