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

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, ۲۰۰ Re ۵۰۰۰, the relative height of the baffle, ۰ Hb ۰.۷۵, and the emissivity of the walls, ۰ ۱, 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.

کلیدواژه ها:

Mixed convection ، ventilated cavity ، Surface radiation ، Numerical study ، adiabatic partition