Effect of Dam Location on the Performance Characteristics of Two -Lobe Bearing: Micropolar Lubricated

Abstract

This paper presents the effect of pressure dam parameters on the static and dynamic characteristics of two lobe pressure dam bearing. The modified Reynolds equation is derived on the basis of micropolar fluid theory. The Galerkin approach of finite element method has been used to solve modified Reynold's equation for carrying out the performance characteristics. The characteristics, which have been calculated for a wide range of dam parameters, have been found to be greatly influenced with the variation of the micropolar parameters. Effect of various dam locations is presented on two micropolar parameter, coupling number (N2) which couples the linear and angular momentum equation, arising the micro rotational effect of the suspended particles in the fluid and characteristics length (lm) which represents the interaction between the micropolar fluid and the film gap.

Influence of surface textures on the dynamic stability and performance parameters of hydrodynamic two-lobe journal bearings

“…Dwivedi et al 8 studied the impact of geometry of lobes and L/D ratio on the static characteristics of two-lobe journal bearing. Sharma and Krishna 9 evaluated the performance of two-lobe pressure dam bearings operating under micropolar fluid. They demonstrated that the stability of two-lobe pressure dam bearings increased with the decrease of aspect ratio ( L / D ).…”