Free Convective Heat Transfer in Radiative MHD Casson Fluid Flow over a Stretched Surface of Variable Thickness

Abstract

This study deals with the free convective heat transfer in a 2D magnetohydrodynamic flow of Casson fluid over a non-uniform thickness stretching sheet in the presence of thermal radiation and non-uniform heat source/sink effects. The governing equations of the flow and heat transfer are transformed as the asset of nonlinear ODEs and solved numerically using bvp4c Matlab package. The effect of pertinent parameters, namely, magnetic field parameter, Casson parameter, thermal radiation parameter, non-uniform heat source/sink parameters on the flow and heat transfer is investigated with the assistance of graphs. Numerical results are computed for the friction factor and reduced Nusselt number. It is observed that the thermal radiation has tendency to enhance the temperature field of Casson fluid.

Keywords: MHD, Casson fluid, Thermal radiation, Slendering sheet, non-Uniform heat source/sink.