In the present paper we examine analytically the steady hydrodynamic flow of a power-law
non-Newtonian fluid from a rotating disk to a saturated non-Darcian porous medium. The
equations for radial, azimuthal and axial momentum are formulated with additional drag
force terms for the Darcian linear porous impedance and the second order Forchheimer
resistance. The disk is assumed to be of infinite extent and rotates at a constant angular
velocity about the z-axis which is perpendicular to it. The disk lies in the xy plane. Using the …