Chemical reaction effect on unsteady MHD flow past an infinite vertical porous plate in the presence of heat absorption

Abstract

In this paper the problem of two dimensional, unsteady, laminar, magneto hydro dynamic free convective flow through a porous medium past a vertical plate in the presence of heat absorption and chemical reaction is considered. The Dufour effect is taken into account. The free stream velocity is supposed to follow the exponentially increasing small perturbation law. The non-dimensional governing equations are solved analytically by two-term harmonic and non-harmonic functions. The velocity, temperature and concentration distributions are analyzed for different values of parameters.