A. Sahaya Jenifer - Department of Mathematics, National Institute of Technology, Tiruchirappalli, India
P. Saikrishnan - Department of Mathematics, National Institute of Technology, Tiruchirappalli, India
Roland W. Lewis - College of Engineering, Swansea University, Swansea, United Kingdom

This paper examines the unsteady magnetohydrodynamic (MHD) mixed convection flow over a sphere combined with variable fluid properties. An implicit finite difference scheme, together with the quasi-linearization, is used to find non-similar solutions for the governing equations. The vanishing skin friction is prevented or at least delayed by enhancing the mixed convection in both the cases of steady and unsteady fluid flow. Both skin friction and heat transfer coefficients are found to be increasing with an increase in time or MHD parameter.

unsteady flow, Mixed convection, MHD, Sphere, Variable properties, Non-similar solution