EFFECT OF THERMAL DIFFUSION ON UNSTEADY MHD FREE CONVECTIVE FLOW AND MASS TRANSFER THROUGH POROUS MEDIUM WITH RADIATION AND VARIABLE PERMEABILITY IN SLIP FLOW REGIME

摘要

The present paper is a study of unsteady two-dimensional free convective flow with radiation and mass transfer through a viscous incompressible and electrically conducting fluid through a porous medium of variable permeability and transverse magnetic field, bounded by an infinite porous vertical plate in slip flow regime. The permeability of porous medium is decreasing exponentially with time about a constant mean. The effects of Gr (Grashof number), A (Thermal diffusion parameter), K_0 (Permeability parameter), M (Magnetic field parameter), h_1 (Rarefaction parameter), Pr (Prandtl number), Sc (Schmidt number) and R (Radiation parameter) with the time t on the velocity profile, temperature, and concentration distribution and skin friction are discussed with the help of graphs.