Estimation of heat flux bifurcation at the heated boundary of a porous medium using a pore-scale numerical simulation

Imani, G. R., Maerefat, M. and Hooman, K. (2012) Estimation of heat flux bifurcation at the heated boundary of a porous medium using a pore-scale numerical simulation. International Journal of Thermal Sciences, 54 109-118. doi:10.1016/j.ijthermalsci.2011.11.006


Author Imani, G. R.
Maerefat, M.
Hooman, K.
Title Estimation of heat flux bifurcation at the heated boundary of a porous medium using a pore-scale numerical simulation
Journal name International Journal of Thermal Sciences   Check publisher's open access policy
ISSN 1290-0729
Publication date 2012-04-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.ijthermalsci.2011.11.006
Open Access Status Not yet assessed
Volume 54
Start page 109
End page 118
Total pages 10
Place of publication Issy les Moulineaux, Cedex, France
Publisher Elsevier
Language eng
Subject 2200 Engineering
3104 Condensed Matter Physics
Abstract Laminar steady forced convection through an array of disconnected conducting cylindrical fins is simulated by implementing a pore-scale numerical simulation. Effects of fin array porosity, fin arrangements, pore-scale Reynolds number, and the solid to fluid thermal conductivity ratio, on the heat flux bifurcation at the uniformly heated wall are investigated. The results show that decreasing the Reynolds number or increasing the solid to fluid thermal conductivity ratio monotonically increases the solid to fluid wall heat flux ratio. It is also observed that solid to fluid heat flux ratio increases with increasing the porosity. The obtained results have been compared to available models in the literature. While in some cases the results are close, errors associated with available models are analyzed and accurate correlations for heat flux bifurcation are proposed.
Keyword Forced convection
Porous media
Isoflux boundary condition
Heat flux bifurcation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 6 December 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2012 Collection
 
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