Diffusion–Thermo and Radiation Absorption on MHD Free Convection Flow of Casson Fluid Past a Vertical Surface With Convective Boundary Condition

Abstract

The effects of Diffusion – thermo on MHD free convection flow of a Casson fluid over a vertical preamble surface with the heat source is investigated by introducing convective boundary condition at the surface where the thermal conductivity of the fluid varies linearly with respect to the temperature. Casson fluid model is used to characterize the non-Newtonian fluid behaviour. The governing partial differential equations are converted into non-linear ordinary differential equations by using similarity transformation and the expressions for the velocity, temperature and concentration distributions are obtained using perturbation technique. The behaviour of flow quantities within the boundary layer has been discussed and analyzed for various flow parameters through graphs. The influence of the Skin-friction, the local Nusselt number and the local Sherwood number is discussed and presented in tabular form.