MHD Flow past a Rotating Porous Plate through Porous Medium Rotating about a Non-Coincident Parallel Axis

摘要

The purpose of the present work is to investigate the MHD flow of an incompressible viscous electrically conducting fluid past a porous plate through porous medium. The porous plate rotates with uniform angular velocity about an axis normal to the plate and the fluid at infinity rotates with the same angular velocity about a non coincident parallel axis. An uniform magnetic field is applied parallel to the axis of rotation. An exact soiution of the governing equations has been obtained in a closed form. It is found that steady velocity increases and transient velocity decreases with increase in magnetic parameter. The analysis also reveals that attainment of steady state in case of primary velocity is much quicker and this is attributed to Lorentz force. The heat transfer characteristic has also been studied on taking viscous and Joule dissipation into account. It is seen that temperature increases with increase in either M or K_p,