Effects of mass diffusion and variable suction on MHD convective heat transfer flow between two vertical porous parallel plates embedded in a porous medium

Abstract

This paper analyzes the effect of mass diffusion and variable suction on two dimensional unsteady magnetohydrodynamic convective flow of a viscous incompressible electrically conducting fluid between two vertical porous parallel plates through a porous medium in the slip flow regime. The governing equations of the flow field are solved employing perturbation technique and the expressions for the velocity, temperature, concentration distribution, skin friction and the rate of heat transfer i.e. the heat flux in terms of Nusselts number Nu are obtained. The effects of the pertinent parameters such as magnetic parameter M, permeability parameter Kp, Grashof number for heat and mass transfer Gr, Gc, slip flow parameters h1, h2; Schmidt number Sc, Prandtl number Pr etc. on the flow field have been studied and the results are presented graphically and discussed quantitatively.