Comparative analysis of performance parameters of journal bearing with groove and dimple shape surface texturing

Abstract

In this paper, comparative analysis of performance parameters of hydrodynamic journal bearing (HJB) with ellipsoidal dimple and rectangular groove shape texturing is carried out. A three-dimensional thin film flow model of COMSOL Multiphysics 5.0 is used to investigate the static performance characteristics of different configurations of the bearing system. The performance parameters viz. load carrying capacity (LCC); frictional torque (FT) and coefficient of friction (COF) are studied numerically at the different number of the array, the height of texture and the axial spacing between texturing. The numerical investigation is carried out at the same textured area and textured location for all configurations. From the investigation, it is found that ellipsoidal dimple shape texturing gives the best performance as compared with groove shape texturing.