Volume 76, Number 5, December 2006
|Page(s)||829 - 835|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||16 November 2006|
Finite-difference lattice Boltzmann approach to pressure-driven microchannel flow with variable temperature
Center for Fundamental and Advanced Technical Research, Romanian Academy Bd. Mihai Viteazul 24, RO-300223 Timişoara, Romania
Accepted: 17 October 2006
Diffuse reflection boundary conditions are introduced in a two-dimensional thermal lattice Boltzmann model to allow for variable fluid density along the walls. The capability of this model to capture the main characteristics of pressure-driven flow in microchannels (temperature drop, rarefaction effects, velocity slip and the minimum of the flow rate as a function of the Knudsen number) is checked.
PACS: 47.45.-n – Rarefied gas dynamics / 47.11.-j – Computational methods in fluid dynamics / 67.40.Hf – Hydrodynamics in specific geometries, flow in narrow channels
© EDP Sciences, 2006
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