EFFECTS OF FREE-CONVECTION ON THE HYDROMAGNETIC ACCELERATED FLOW PAST A VERTICAL POROUS LIMITING SURFACE

The effects of free convection on the accelerated flow of a viscous, incompressible and electrically conducting fluid (e.g. of a stellar atmosphere) past a vertical, infinite, porous limiting surface (e.g. of a star) in the presence of a transverse magnetic field, is considered. The magnetic Reynolds number of the flow is taken to be small enough, so that the induced magnetic field is negligible. Expressions for velocity and skin-friction are obtained by using Laplace transform, when the Prandtl number is equal to one (P=1). Graphs showing variations of velocity and skin-friction, for different values of G (Grashof number) and M (magnetic parameter) are plotted, and the results of them are discussed. © 1979 D. Reidel Publishing Co.