Impact of magnetic field in three-dimensional flow of an Oldroyd-B nanofluid

This study explores the three-dimensional boundary layer flow of an Oldroyd-B nanofluid. Flow is induced by a bidirectional stretching surface. Brownian motion and thermophoresis effects are considered. Fluid is electrically conducted in the presence of an applied magnetic field. Newly proposed boundary condition requiring zero nanopartide mass flux at the boundary is employed. The governing nonlinear boundary layer equations through appropriate transformations are reduced into the nonlinear ordinary differential systems. The resulting nonlinear system has been solved for the velocities, temperature and nanoparticle concentration expressions. The contributions of various interesting parameters are studied graphically. The local Nusselt number is tabulated and discussed. (C) 2015 Elsevier B.V. All rights reserved.