Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux: Gravity and inclination angle on slip-velocity
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 7 June 2019
Issue publication date: 22 May 2020
Abstract
Purpose
The purpose of this paper is to improve the lattice Boltzmann method’s ability to simulate a microflow under constant heat flux.
Design/methodology/approach
Develop the thermal lattice Boltzmann method based on double population of hydrodynamic and thermal distribution functions.
Findings
The buoyancy forces, caused by gravity, can change the hydrodynamic properties of the flow. As a result, the gravity term was included in the Boltzmann equation as an external force, and the equations were rewritten under new conditions.
Originality/value
To the best of the authors’ knowledge, the current study is the first attempt to investigate mixed-convection heat transfer in an inclined microchannel in a slip flow regime.
Keywords
Citation
Mozaffari, M., D’Orazio, A., Karimipour, A., Abdollahi, A. and Safaei, M.R. (2020), "Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux: Gravity and inclination angle on slip-velocity", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 6, pp. 3371-3398. https://doi.org/10.1108/HFF-12-2018-0821
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited