In this work, we study the flow and heat transfer characteristics of a viscous nanofluid over a nonlinearly stretching
sheet in the presence of thermal radiation, included in the energy equation, and variable wall temperature. A
similarity transformation was used to transform the governing partial differential equations to a system of nonlinear
ordinary differential equations. An efficient numerical shooting technique with a fourth-order Runge-Kutta scheme
was used to obtain the solution of the boundary value problem. The variations of dimensionless surface
temperature, as well as flow and heat-transfer characteristics with the governing dimensionless parameters of the
problem, which include the nanoparticle volume fraction j, the nonlinearly stretching sheet parameter n, the
thermal radiation parameter NR, and the viscous dissipation parameter Ec, were graphed and tabulated. Excellent
validation of the present numerical results has been achieved with the earlier nonlinearly stretching sheet problem
of Cortell for local Nusselt number without taking the effect of nanoparticles.