Boundary-Layer Heat Transfer from a Stretching Circular Cylinder in a Nanofluid

The similarity analysis for the problem of a steady boundary-layer heat transfer of a nanofluid on an isothermal stretching circular cylinder is presented. The boundary-layer problem reduces to the classical problem of flow and heat and mass transfer due to a stretching cylinder in a viscous fluid when Nb and Nt are zero. The governing boundary-layer equations are solved numerically using the fourth-order Runge-Kutta scheme along with the shooting method. The nanofluid parameters display a considerable effect on the rates of heat and mass transfer. The heat transfer rate increases as the Prandtl number Pr increases and at higher values of Pr, the thermal diffusivity decreases, which results in the increase of the heat transfer rate.x-(.