Transient MHD Flow of a Particular Class of Non-Newtonian Fluids Near a Rotating Porous Disk with Heat Transfer

Abstract

The unsteady MHD flow of an incompressible viscous non-Newtonian electrically conducting fluid and heat transfer about an infinite rotating porous disk are studied. The effect of an externally applied uniform magnetic field, the non-Newtonian fluid characteristics and the mass injection or removal at the surface of the disk on the velocity and temperature distributions as well as the heat transfer is considered. Solutions of the equations which govern the magnetohydrodynamics and energy transfer are obtained over the entire range of the physical parameters. It is found that the non-Newtonian fluid characteristics has an interesting effect in reversing the direction of the axial and radial velocity components for some range of the magnetic field and the suction or injection velocity. Also, the magnetic field has a more pronounced effect on the flow in the case of injection than suction. On the other hand, the non-Newtonian fluid characteristics has a more apparent effect on the flow in the case of injection than in the case of suction.