To read the full version of this content please select one of the options below:

CFD analysis of load-carrying capacity of hydrodynamic lubrication on a water-lubricated journal bearing

Gao Gengyuan (School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China)
Yin Zhongwei (School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China)
Jiang Dan (School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China)
Zhang Xiuli (School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 9 February 2015

Abstract

Purpose

The purpose of this paper is to improve hydrodynamic load-carrying capacity of a water-lubricated journal bearing by a new bush structure. Water-lubricated bearing is becoming more and more popular since it is environmentally friendly and saves energy. However, contrary to oil and grease-lubricated bearings, water-lubricated bearing is limited in many situations due to its low hydrodynamic load-carrying capacity.

Design/methodology/approach

The present article proposes a new bearing bush, with a transition-arc structure, which is favorable for increasing hydrodynamic load-carrying capacity. Hydrodynamic load-carrying capacity was calculated by means of three-dimensional computational fluid dynamics (3-D CFD) analysis. Several variants of a journal bearing with a transition-arc structure of different dimensions are analyzed, while the radial clearance of the bearing, eccentricity ratio and the velocity of the journal remain unchanged.

Findings

The results show that obvious changes are found in hydrodynamic load-carrying capacity of a water-lubricated journal bearing. For different width over diameter (L/D) bearing ratios, the relationship between hydrodynamic load-carrying capacity and the magnitude of the transition-arc structure dimension is researched.

Originality/value

The research presented here leads to a design reference guideline that could be used by the designer engineer to design smart journal bearings for improving the hydrodynamic load-carrying capacity.

Keywords

Acknowledgements

This research is supported by the National Natural Science Foundation (51175341) of China.

Citation

Gengyuan, G., Zhongwei, Y., Dan, J. and Xiuli, Z. (2015), "CFD analysis of load-carrying capacity of hydrodynamic lubrication on a water-lubricated journal bearing", Industrial Lubrication and Tribology, Vol. 67 No. 1, pp. 30-37. https://doi.org/10.1108/ilt-03-2013-0028

Publisher

:

Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited