MIXED CONVECTION HEAT AND MASS TRANSFER FLOW ALONG A STRETCHING CYLINDER IN A THERMALLY STRATIFIED MEDIUM WITH THERMAL RADIATION EFFECTS

Abstract: The heat and mass transfer characteristics of a mixed convection flow along a stretching cylinder embedded in a thermally stratified medium are numerically analyzed, incorporating the thermal radiation effects. The governing boundary layer equations of continuity, momentum, energy and concentration are transformed into nonlinear ordinary differential equations using similarity transformations, and then solved by Runge-Kutta method along with shooting technique. The effects of various material parameters on the velocity, temperature and concentration as well as the skin friction coefficient, Nusselt number and Sherwood number are represented in graphs and tables. It has been found that these parameters affect considerably the flow characteristics. The problem under consideration reduces to the flat plate case when the curvature parameter is absent, and therefore the present results are compared with the available literature, and found to be in good agreement. It is observed that both the skin friction coefficient and the heat transfer rate at the surface are larger for a cylinder compared to that of a flat plate