Unsteady free-convective flow and mass transfer in a rotating porous medium with Hall current, I

Abstract

The Hall effect on the unsteady hydromagnetic free-convection resulting from the combined effects of thermal and mass diffusion of an electrical-conducting liquid through a porous medium past an infinite vertical porous plate in a rotating system have been analysed. The expressions for the mean velocity, mean skin friction, and mean rate of heat transfer on the plate are derived. The effects of magnetic parameter M, Hall parameter m, Ekman number E, and permeability parameter K* on the flow field are discussed with the help of graphs and tables. © 1991 Kluwer Academic Publishers.