Combined Effects of Periodic Suction and Permeability on MHD Oscillatory Flow of Rivlin Ericksen Fluid past a Moving Semi-infinite Porous Plate in the Presence of Thermal Radiation

Abstract

In this paper the behaviour of unsteady flow of viscous incompressible and electrically conducting Rivlin Ericksen fluid past a semi-infinite vertical porous plate having variable permeability under thermal radiation effects is examined. Further the time dependent suction is assumed at the plate which is moving with constant velocity whereas the free stream velocity is assumed to be oscillating with time. The dimensionless governing equations for the fluid flow under investigation are reduced to set of ordinary differential equations using two term harmonic and non-harmonic functions and solved analytically under relevant boundary conditions. Further the analytical results obtained for velocity, temperature and concentration profiles are evaluated numerically and their variation with different flow parameters are shown graphically. Also, the variation behaviour of Skin friction, Nusselt number and Schmidt number along with their amplitudes and phase angles for pertinent parameters is displayed graphically.