Mass transfer effects on the unsteady hydromagnetic free convection flow past an accelerated vertical porous plate

Effects of free convection currents and mass transfer on the unsteady flow of an electrically conducting and viscous incompressible fluid around an accelerated infinite vertical porous plate subjected to variable suction proportional to (time) -1 2/, in presence of a transverse magnetic field, have been studied. Analytical solutions to the unsteady flow and the skin friction have been derived for small magnetic field parameter M. During the course of discussion, the effects of the Grashof number G r' the modified Grashof number G e (depending on the species concentration difference), and the Schmidt number S e have been discussed.