Numerical Simulation on Effect of Porous Medium on Mixed Convection Heat Transfer in a Ventilated Square Cavity

The aim of the present numerical study is to investigate the effect of adding porous media to a ventilated square cavity, on the mixed convection heat transfer. The top wall of the enclosure is kept at constant temperature and the bottom wall is located at constant heat flux. The right and left walls are kept to be adiabatic. An external flow entering to the cavity from a port in left vertical wall and leaving from a port at right vertical wall. The finite volume method is used to discretize the governing equations and they solved with SIMPLE algorithm. In this article, the effects of the Richardson number and the Darcy number on the fluid flow and heat transfer rate have been studied. The obtained results showed that the increasing Darcy number and porous particles diameter, causes a decreasing trend of the heat transfer rate.