Magnetohydrodynamic flow of a viscous electrically conducting fluid through a porous medium induced by a rotating disk with suction

The present paper investigates the steady MHD forced flow of an incompressible viscous electrically conducting fluid, due to a rotating disk bounded by porous medium. A uniform suction is applied on the upper disk. Flows in the two regions are matched at the interface by assuming that the velocity and stress components are continuous at it. At the interface (porous medium-clear fluid boundary), a modified set of boundary conditions suggested by Ochao-Tapia and Whittaker is applied. Analytical expressions for the velocity and shearing stress are calculated and effects of various parameters upon them are examined. (author)