Analysis of MHD Effects on Porous Flat Plate and Curved Circular Plate with Couple Stress Fluid

Abstract

The purpose of this article is to examine the effect of MHD on curved circular and porous flat plates lubricated with couple stress fluid. It is assumed that the flow in the porous region follows Darcy’s law. A generalized form of Reynolds's equation is derived on the basis of Stokes Theory of couple stress fluids in the presence of applied external magnetic field. The non-dimensional form of modified Reynolds's equation is solved and the closed form expressions are obtained for the fluid film pressure, load carrying capacity and squeeze film time. It is found that, the effect of applied magnetic field and couple stress lubricants are to increase the squeeze film pressure, load carrying capacity and to lengthen the squeezing time. Also, the effect of permeability parameter is to decrease the pressure, load-carrying capacity and squeeze-film time as compared to the non-porous case.