Forced convection of nanofluid flow across horizontal circular cylinder with convective boundary condition

A numerical investigation has been conducted to investigate the steady forced convection boundary layer nanofluid flow past a horizontal circular cylinder placed in water-based copper (Cu) and alumina (Al2O3) nanofluids. Using appropriate transformations, the system of partial differential equations is converted into an ordinary differential system of three equations, which is solved numerically using Keller box and Newton-Raphson methods. The effects of thermal and solutal convective boundary conditions are taken into account which makes the present analysis practically applicable. Numerical results are obtained for the dimensionless velocity, temperature and concentration as well as the skin-friction, Nusselt and Sherwood numbers for specific values of the governing parameters with fixed Prandtl number (Pr = 62) and Schmidt number (Sc = 0.68) for water. It is shown that, for a regular fluid (phi = 0), a very good agreement exists between-the present numerical results and those reported in open literature. (C) 2016 Elsevier B.V. All rights reserved.