A Study of the Lubricant Film Characteristics of Journal Bearings : Part 2, Effects of Various Design Parameters on Thermal Characteristics of Journal Bearings

Abstract

This paper presents the theoretical results of a study on thermal characteristics of a journal bearing. Joint calculation is made of the temperature destribution across the oil film thickness and on the bearing bush inner surface, as well as, of the heat flow ratio as a function of the clearance ratio, eccentricity ratio, journal speed, rate of heat diffusion on the bearing bush outer surface, lubricant viscosity and supply temperature. The results show that the maximum temperature and the location vary markedly with a change in the clearance ratio. Moreover, the theory presented agrees with the experimental results of D. Dowson and others.