MIXED CONVECTION FLOW ALONG A VERTICAL STRETCHING PERMEABLE SHEET IN A DARCY-BRINKMAN ISOTROPIC POROUS MEDIUM

The boundary layer flow along a vertical permeable sheet embedded in a Darcy−Brinkman porous medium, has been investigated in this paper. At the sheet either constant suction or constant injection is applied. The results are obtained with the direct numerical solution of the governing equations. The problem is similar and is governed by four nondimensional parameters which are the Prandtl number, the mixed convection parameter, the permeability parameter, and the suction (injection) parameter. The influence of these parameters on the results is presented in tables and figures. It is found that the permeability parameter, suction parameter, and Pr number act in the same way on velocity while the mixed convection parameter and the injection parameter act in the opposite way. Concerning the temperature the permeability and the injection parameter act in the same way, whereas the Pr number, the mixed convection parameter, and the suction parameter act in the opposite way.