Effects of Radiation and Time Dependent Permeability on Unsteady Two-Dimensional Hydromagnetic Free Convective Flow and Heat Transfer through Porous Medium Bounded between Parallel Plates

Abstract

Aim of the present paper is to investigate the unsteady, two-dimensional, hydromagnetic, free convective flow with radiative heat transfer through porous medium in the presence of periodic cross-flow velocity and time dependent permeability. The porous medium is confined between two infinite parallel plates. The governing equations of fluid velocity and temperature are solved by perturbation technique and separation of variable technique. The coefficient of skin-friction and Nusselt number at the plates are derived, discussed numerically. Numerical values of skin-friction coefficient for various values of physical parameters are presented through table and the Nusselt number is shown through graphs.