HEAT AND MASS TRANSFER EFFECTS ON UNSTEADY MHD FREE CONVECTION FLOW OVER STRETCHING SHEET WITH THE EFFECT OF THERMAL RADIATION AND SORET NUMBER IN POROUS MEDIUM

The flow problem presented in the paper is a study on unsteady two dimensional MHD laminar forced convective and stable boundary layer flow of incompressible viscous fluid past a heated stretching sheet moving with variable velocity in a porous medium subjected to a magnetic field, thermal diffusion, thermal radiation, viscous dissipation and chemical reaction effects. The partial differential equations appearing in the governing equations of the problem are transformed into a couple of nonlinear ordinary differential equations with the help of similarity transformations. The transformed equations are solved numerically by the Runga-Kutta forth order method along with shooting technique. The effects of various parameters on the velocity, temperature and concentration distributions are analyzed and discussed with the help of graphs. Skin-friction coefficient, Nusselt number and Sherwood number are discussed numerically and presented through tables.