K. D. Singh - Department of Mathematics (ICDEOL), H.P. University, Shimla-۱۷۱ ۰۰۵, INDIA.
R. Kumar - Department of Mathematics, Govt. College For Girls ( RKMV), Longwood, Shimla- ۱۷۱ ۰۰۱, INDIA.

In this paper, an analytical study on unsteady MHD free convective viscous incompressible flow of electrically-conducting fluid with periodic heat and mass transfer past an infinite vertical porous flat plate in slip flow regime is presented. A uniform magnetic field perpendicular to the plate is applied. The effects of thermal radiation and chemical reaction are included. The effects of flow parameters and thermo physical properties on the flow, temperature and concentration fields across the boundary layer are investigated. The forms of the wall shear stress, Nusselt number and Sherwood number are derived. The results are shown in figures and tables followed by a quantitative discussion.

flow regime, MHD, free convection, Slip, Thermal radiation, Chemical reaction