Abstract
A boundary layer analysis is performed to study the effects of thermal radiation on the flow of an incompressible viscous electrically conducting fluid over an unsteady stretching sheet embedded in a porous medium in the presence of heat source or sink. The governing boundary layer equations are transformed to ordinary differential equations by using similarity transformation and solved numerically by Runge–Kutta fourth order method in association with quasilinear shooting technique. The effects of unsteadiness parameter, permeability parameter, magnetic parameter, thermal radiation parameter, Prandtl number, heat source or sink parameter and Eckert number are represented graphically on velocity and temperature profiles while local skin friction coefficient and local Nusselt number are represented numerically. The results for the non-magnetic case are in good agreement with earlier published work.
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