Effects of magneto hydrodynamic and surface roughness on squeeze film characteristics between parallel stepped plates with micro polar fluid

Abstract

In this paper, the effects of surface roughness and magnetohydrodynamic (MHD) combined together with squeeze film characteristics of micropolar fluid on the parallel stepped plate are analyzed. On the basis of Christensen’s theory, the one-dimensional structure of the radial and azimuthal roughness patterns is considered. The modified stochastic Reynold’s equation is derived for these two types of roughness patterns by taking into account micropolar fluid. The analytical approximation solution for mean fluid film pressure and workload is obtained. The results are compared between the MHD and non-MHD cases. On the whole, it is observed that with an increase in roughness parameter, the pressure and workload increase with distance and height respectively.