Convective heat transfer of viscous fluid over a stretching sheet embedded in a thermally stratified medium

In this article we have investigated the heat transfer of an electrically conducting viscous fluid over a porous stretching sheet in a thermally stratified medium. The governing non-linear partial differential equations are reduced to ordinary differential equations using appropriate similarity transformations. The resulting ordinary differential equations are then solved in the form of a confluent hyper-geometric function for an exact solution. The developed exact solutions of the velocity and temperature fields are graphically sketched and examined for various values of pertinent parameters including the Prandtl number, stratification parameter, suction/injection parameter and the magnetic parameter. The skin friction coefficient and the local Nusselt number are tabulated and thoroughly discussed.