MIXED CONVECTION HEAT-TRANSFER IN A RECTANGULAR CAVITY VENTILATED ANDHEATED FROM THE SIDE

Mired convection heat transfer in a ventilated cavity subjected to a u niform heat flux from the side is studied numerically using the Navier -Stokes equations with the Boussinesq approximation. Flow fields, temp erature fields, and heat transfer rates are examined for different val ues of Rayleigh and Reynolds numbers. The proposed model is solved for wide ranges of these parameters: 10(3) less than or equal to Ra less than or equal to 5 x 10(6) and 5 less than or equal to Re less than or equal to 5000. The relative height of the openings is kept constant ( B = h'/H' 1/4). The effect of these parameters on heat transfer and fl uid flow will be examined, and useful correlations are proposed by con sidering air as a working fluid (Pr = 0.72).