Influence of Brownian Motion and Thermal Radiation on Heat Transfer of a Nanofluid Over Stretching Sheet with Slip Velocity

Abstract

In this study combined effect of thermal radiation and velocity slip in the boundary layer flow and heat transfer over a stretching surface with Brownian motion is considered. The similarity transformation and Runge–Kutta–Fehlberg method with shooting technique is used to solved the set of nonlinear ordinary differential equations. The influence of important physical parameters such as Prandtl number, slip factor, Brownian motion, Lewis number and thermophoretic parameters are analyzed on the velocity, temperature, surface shear stress, Nusselt number and Sherwood number. The results show that the effect of increase in the internal heat source/sink parameter increases the temperature in the thermal boundary layer. Further, local Nusselt number decreases with an increase in the value of the thermophoretic parameter, Brownian motion parameter and internal heat source/sink parameter. Also, it can be concluded that the effect of slip velocity is to decrease the shear stress at the surface of the stretching sheet.