Forced convective heat transfer to Sisko nanofluid past a stretching cylinder in the presence of variable thermal conductivity

This article investigates the influence of variable thermal conductivity on the heat transfer to Sisko nanofluid past a horizontally stretching cylinder in the presence of convective boundary and nanoparticle flux conditions. The local-similarity transformation is used to transfer the governing partial differential equations into the ordinary differential equations. Further, these higher order differential equations are converted into seven first order differential equations which are then solved numerically by employing shooting technique. Interestingly, the analysis reveals that the temperature and concentration profiles are larger in case of flow past a cylinder as compared to the flat plate. In addition, with the increasing N-b the concentration profile decreases but the temperature profile remains unaffected. To prove the authenticity of the obtained numerical results a comparison is made with the HAM results. (C) 2016 Elsevier B.V. All rights reserved.