%0 Journal Article %T Chemical reaction effect on an unsteady MHD free convection flow past a vertical porous plate in the presence of suction or injection %A Shivaiah S. %A Rao Anand J. %J Theoretical and Applied Mechanics %D 2012 %I Serbian Society of Mechanics, Belgrade %R 10.2298/tam1202185s %X The objective of this paper is to analyze the effect of chemical reaction on unsteady magneto hydrodynamic free convective fluid flow past a vertical porous plate in the presence of suction or injection. The governing equations of the flow field are solved numerically by a finite element method. The effects of the various parameters on the velocity, temperature and concentration profiles are presented graphically and values of skin-friction coefficient, Nusselt number and Sherwood number for various values of physical parameters are presented through tables. %K chemical reaction %K MHD %K vertical plate %K suction %K finite element method %U http://www.doiserbia.nb.rs/img/doi/1450-5584/2012/1450-55841202185S.pdf