Paper Title:
Three-Dimensional Double Diffusion Mixed Convection in Rectangular Channel Filled with Porous Medium
  Abstract

This paper presents a numerical study of mixed convection heat and mass transfer in horizontal rectangular channels partially filled with porous medium. The main contribution of this research is to characterize how the porous block will create a heterogeneity that will induce a change on the Poiseuille-Rayleigh-Benard (PRB) fluid circulation dynamics. For a broad range of dimensionless parameters, which control the mixed convection, we show that the effect of the insertion of the porous block changes the thermal and solutal boundary layers; we find that the exchanges are intensified near the sidewalls in the porous region compared to upstream and downstream of the porous medium; and inversely in the core region. We describe, also, the onset of the longitudinal rolls at both upstream and downstream of the porous region. And finally, we compared the heat transfer, for different positioning of the porous medium with the purely fluid mixed convection.

  Info
Periodical
Defect and Diffusion Forum (Volumes 297-301)
Edited by
Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado
Pages
1010-1015
DOI
10.4028/www.scientific.net/DDF.297-301.1010
Citation
O. Rahli, R. Bennacer, K. Bouhadef, D. E. Ameziani, E. Ghorbel, "Three-Dimensional Double Diffusion Mixed Convection in Rectangular Channel Filled with Porous Medium", Defect and Diffusion Forum, Vols. 297-301, pp. 1010-1015, 2010
Online since
April 2010
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$32.00
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