©ARC Page 944 Effect of Surface Roughness in a Narrow Porous Journal Bearing With a Heterogeneous Slip/No-Slip Surface

Abstract: In this paper, a numerical simulation of the effect of surface roughness in hydrodynamic lubrication of a porous journal bearing with a heterogeneous slip/no-slip surface is studied. The modified Reynolds equations accounting for the heterogeneous surface on which slip occurs in certain region and is absent in others, by considering surface roughness structure, are mathematically formulated. The well established Christensen stochastic theory is the basis for present work. The problem is formulated and solved by using appropriate boundary conditions for heterogeneous surface. The result shows that with a roughness pattern, a significant increase in load support can be achieved with an appropriate surface pattern