Finite element solution of thermal radiation effect on unsteady MHD flow past a vertical porous plate with variable suction

Abstract

The paper examined the thermal radiation effect on unsteady megnetohydrodynamic flow
past a vertical porous plate with variable suction is analyzed. The non dimensional governing
equations are formed with the help of suitable dimensionless governing parameter. The resultant
coupled non dimensional governing equations are solved by a finite element method. The
velocity, temperature and concentration distributions are derived, discussed numerically and their
profiles for various values of physical parameters are shown through graphs. The coefficient of
skin-friction, Nusselt number and Sherwood number at the plate are derived, discussed
numerically and their numerical values for various values of physical parameters are presented
through Tables. It is observed that, when the radiation parameter increases the velocity and
temperature increase in the boundary layer. Also, it is found that as increase in the magnetic field
leads to decrease in the velocity field and rise in the thermal boundary thickness.