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COMPUTATION OF COMBINED MIXED CONVECTION AND SURFACE RADIATION IN A PARTITIONED VENTILATED RECTANGULAR CAVITY

DOI: 10.1615/ICHMT.2008.CHT.1510
10 pages

Ahmed Bahlaoui
Sultan Moulay Slimane university, Faculty of Sciences and Technologies, Physics Department, UFR of Sciences and Engineering of Materials, Team of Flows and Transfers Modelling (EMET), B.P. 523, Béni-Mellal, Morocco

Abdelghani Raji
Sultan Moulay Slimane university, Faculty of Sciences and Technologies, Physics Department, UFR of Sciences and Engineering of Materials, Team of Flows and Transfers Modelling (EMET), B.P. 523, Béni-Mellal, Morocco

Mohammed Hasnaoui
Cadi Ayyad University, Faculty of Sciences Semlalia, Physics Department, UFR TMF, Laboratory of Fluid Mechanics and Energetics (LMFE), B.P. 2390, Marrakech, Morocco

Mohamed Naimi
Faculty of Sciences and Technologies, Physics Department, Laboratory of Flows and Transfers Modeling (LAMET), Sultan Moulay Slimane University, B.P. 523, Beni-Mellal, Morocco

Taoufik Makayssi
Sultan Moulay Slimane university, Faculty of Sciences and Technologies, Physics Department, UFR of Sciences and Engineering of Materials, Team of Flows and Transfers Modelling (EMET), B.P. 523, Béni-Mellal, Morocco

Mohamed Lamsaadi
Sultan Moulay Slimane university, Faculty of Sciences and Technologies, Physics Department, UFR of Sciences and Engineering of Materials, Team of Flows and Transfers Modelling (EMET), B.P. 523, Béni-Mellal, Morocco

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. In this analysis, the forced flow enters the cavity through an opening located in lower part of the cold vertical left wall and leaves it from an opening located in the upper part of the opposite adiabatic wall. 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 baffle position from the inlet, 0.25 ≤ Lb ≤ 1.75, and the emissivity of the walls, 0 ≤ ε ≤ 0.85, on the fluid flow and heat transfer characteristics is studied in detail. The ratio, QE/QL, of the heat quantities leaving the cavity through the exit, QE, and through the vertical cold left side, QL, is also presented versus the above controlling parameters.

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