Micropolar lubricant effects on the performance of partial journal bearings

Abstract

Present work deals with the computation of static performance of partial journal bearing, operated with micropolar lubricant. The non-dimensional Reynolds equation governs the lubricant flow in clearance space and finite element method is used to solve it. Static characteristics including bearing load capacity, attitude angle, friction force, friction factor, and side flow are presented. Input parameters are chosen such as partial angles 120° and 180° and a width-diameter ratio (1.0), for a range of micropolar fluid parameters. The numerically simulated results show that the bearing geometry and lubricant micropolar parameters on higher side, provide an improved static performance of partial journal bearing system.

Stability analysis of partial journal bearings lubricated with micropolar fluid

“…In the open literature, the authors could not find any work dealing with the computation of the stability performance of a partial journal bearing with micropolar lubricant. The authors found only the work of Sharma et al (2023); they presented the static performance of micropolar lubricated partial arc bearings.…”

“…In the context of recent work by Sharma et al (2023), the authors have chosen the dynamic stability analysis of such bearings, so that the results obtained may be helpful to designers and researchers for elastohydrodynamic analysis and thermal analysis of partial journal bearings with micropolar lubrication.…”

“…They suggested that the higher dam width and higher coupling number of lubricant produce lower whirling and a higher threshold speed. Very recently, Sharma et al (2023) developed a FEM model to solve the static performance of partial journal bearings using micropolar fluid theory. They computed and presented the bearing load, friction and side leakage.…”