An analysis of hydrodynamic ferrofluid lubrication of an inclined rough slider bearing

Abstract

The present study aims at analysing the effects of surface roughness, porosity and magnetic field on an inclined slider bearing. The slider bearings mainly are designed for supporting transverse load in an engineering system and enjoy a priority due to its physical wedge pressure generating mechanism. The ferrofluid is being used as lubricant which becomes strongly magnetised in the presence of external magnetic field in a plane inclined rough slider bearing with slip velocity. The earlier studies were related to ferrofluid lubrication based on Shliomis model and it was concluded that the adverse effect of surface roughness was reduced due to magnetisation under the influence of proactive slip parameter. In the present study a space dependent magnetic field of the form has been considered rather than sinusoidal type H2 = KL2 sin (πX). The analysis brings out some interesting results due to change in pattern of magnetic field strength. The pattern of variation of magnetic field considered in the present study contributes to an increase in pressure and load capacity by and load by our conventional lubricant i.e. as that of magnetised lubricant. One interesting finding reported here is that, the adverse effect of slip parameter, reported in earlier studies over load carrying capacity turns rather sinusoidal to be favourable which may be due to the pattern of variation of magnetic field considered in the present study.