Affiliation:
1. Department of Mechanical Engineering, Yuan Ze University, Taoyuan, Taiwan
Abstract
Hydrodynamic journal bearings and herringbone-grooved journal bearings were numerically analyzed using finite volume-based computational fluid dynamics software. Navier–Stokes equations were solved to describe pressure and velocity distributions in three dimensions. Values of the Sommerfeld number were calculated as a benchmark case for a hydrodynamic journal bearing. The predicted values of the Sommerfeld number are comparable to theoretical results from engineering tribology literature. For a hydrodynamic journal bearing, it is found that there is a positive correlation between the maximum pressure and the eccentricity ratio. For a hydrodynamic herringbone-grooved journal bearing, the peak pressures are found to occur at the tips of the grooves. It is further found that a herringbone-grooved design can reduce average axial velocity at the outlet by 84%, compared to a hydrodynamic journal bearing without eccentricity. This design could also address the oil leakage issue occurring often in hydrodynamic bearings. These findings may be useful for oil leakage reduction in a hydrodynamic herringbone-grooved journal bearing design.
Funder
Tung Pei Industrial Co., Ltd.
Ministry of Science and Technology, R.O.C.
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering
Cited by
5 articles.
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