Numerical Study of Mixed Convective Cooling in a Ventilated Cavity Utilizing a Guide Baffle

Abstract

Laminar mixed convective flow in ventilated square cavity with inlet and outlet ports has been executed. The natural convection effect is attained by heating from the constant flux heat source which is symmetrical located at the bottom wall and cooling from the injected flow. An external Newtonian fluid flow (Air, Pr =0.71) enters the cavity through an opening at the bottom of the left vertical wall and exits from another opening at the top of the right vertical wall, which is creating the forced convection flow conditions. Laminar regime is considered under steady state condition. The governing equations including continuity, momentum, and energy are transformed into non-dimensional form and the resulting partial differential equations are solved by the finite volume technique. In addition, horizontal guide baffle with different locations was attached from the left vertical wall to enhance the cooling effect of the source part. A parametric study was performed presenting the influence of Reynolds' number (50?Re?500), Richardson number (0.01?Ri?10), and hence the effect of heat flux represented in the Grashof number automatically generated from both values of Reynolds and Richardson numbers.