Effect of Hall Current on Unsteady Hydromagnetic Free Convection Flow near an Infinite Vertical Porous Plate

Abstract

The effect of Hall current on the unsteady laminar free convection flow of a viscous incompressible and electrically conducting fluid near an infinite vertical porous flat plate subjected to a suction/injection velocity inversely proportional to the square-root of time is investigated in the presence of a constant magnetic field. The results are discussed with the effects of the magnetic number M t , the Hall parameter m , and the suction/injection parameter a for P r (the Prandtl number)=0.71 and 7.0, which represent air and water.