MHD Flow of Sisko Fluid Over a Bidirectional Radiating Stretching Surface Embedded in a Nanofluid Saturated Porous Media in the Presence of Heat Generation/Absorption and Chemical Reaction

摘要

The problem of steady three-dimensional laminar boundary layer flow of non-Newtonian nanofluid in the presence of heat generation/absorption and chemical reaction is analyzed in the present paper. The flow is caused by a bidirectional radiating stretching surface embedded in porous media. Sisko fluid model, one of the various fluid models of non-Newtonian fluid, is considered for stress-strain relationship. The nanofluid is assumed electrically conducted through a constant applied magnetic field. Effects of Brownian motion and thermophoresis in the nanofluid model are considered. The local-similarity transformation is used to transfer the governing partial differential equations into the ordinary differential equations which are then solved analytically by employing Homotopy analysis method. Effects of various physical parameters on velocity, temperature and concentration distributions are studied and discussed, as well as the skin friction coefficient and Nusselt number.