Radiation Effect on Mixed Convection Flow in Concentric Circular Annulus

In this paper, we study the radiation effect on the convective flow of a viscous incompressible fluid through a porous medium between two circular cylinders r = a and r = b, we also consider constant heat sources in the fluid region. The Velocity distribution, Temperature distribution, Skin Friction and Nusselt number are obtained using Galerkin Method. Influence of Grashoff number, Suction parameter, Darcy parameter, Radiation parameter and Heat source parameter on Velocity distribution and Temperature distribution are shown graphically and on Skin Friction and Nusselt number are presented through tables.