A SIMILAR FLOW BETWEEN 2 ROTATING-DISKS IN THE PRESENCE OF A MAGNETIC-FIELD

A similarity solution is obtained for a flow between two rotating para llel disks which, at time t are spaced a distance H(1 - alphat*)1/2 a part and a magnetic field proportional to B0(1 - alphat)-1/2 is appli ed perpendicular to the disks. Approximate analytic solutions are give n and a numerical solution to the resulting nonlinear ordinary differe ntial equations is presented. The effects of magnetic forces on the ve locity profiles, the normal forces and the torques which the fluid exe rts on the disks are studied. It is observed that by increasing the ma gnetic force a considerable increase in the load can be achieved. Also , the torques are more sensitive to changes in the squeeze Reynolds nu mber than to changes in the rotation Reynolds number.