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Height Partition Effect on Combined Mixed Convection and Surface Radiation in a Vented Rectangular Cavity

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Author(s): A. Bahlaoui | R. El Ayachi | M. Hasnaoui | C. Ouardi | M. Naïmi | T. Makayssi

Journal: Journal of Applied Fluid Mechanics
ISSN 1735-3572

Volume: 4;
Issue: 1;
Start page: 89;
Date: 2011;
Original page

Keywords: Mixed convection; surface radiation; numerical study; ventilated cavity; adiabatic partition

ABSTRACT
The present paper reports numerical results of mixed convection and surface radiation within a horizontal ventilated cavity heated from below and provided with an adiabatic thin partition on the heated surface. Air, a radiatively transparent medium, is considered to be the cooling fluid. The effect of the governing parameters, which are the Reynolds number, 200 Re 5000, the relative height of the baffle, 0 Hb 0.75, and the emissivity of the walls, 0 1, on the fluid flow and heat transfer characteristics is studied in detail. The maximum and mean temperatures, the ratio, QE/QL, of the heat quantities leaving the cavity through the exit, QE, and through the left vertical cold side, QL, are also presented versus the above controlling parameters.
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