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Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 1.4

ISSN Imprimer: 1940-2503
ISSN En ligne: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2011002585
pages 203-217

MIXED CONVECTION-RADIATION HEAT TRANSFER IN A VENTED PARTITIONED RECTANGULAR ENCLOSURE

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
University Cadi Ayyad, Faculty of Sciences Semlali
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

RÉSUMÉ

A numerical study has been performed on mixed convection coupled to radiation in a vented enclosure by a finite difference method. An external fluid flow enters the enclosure through an opening in the lower part of the left vertical wall and exits from another opening located on the upper part of the right vertical wall. The cavity is provided with an adiabatic partition of finite thickness located vertically on the upper horizontal wall. Air is considered as cooling fluid; it is radiatively non participating. The effect of the governing parameters, which are the Reynolds number, 200 ≤ Re ≤ 5000, the partition position from the inlet, 0.25 ≤ Lb ≤ 1.75, and the emissivity of the walls, 0 ≤ ε ≤ 1, on fluid flow and heat transfer characteristics are analyzed and discussed. Maximum and mean temperatures are also presented versus the controlling parameters. Results of the study show that, by an appropriate choice of the governing parameters, the heat transfer across the cavity can be enhanced and the mean and maximum temperatures could be reduced.


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