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Flow field characteristics of micro-scale textured surfaces of water-lubricated bearings using lattice Boltzmann method

Chunxiao Jiao (State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, China)
Jianghai Xu (State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, China)
Donglin Zou (State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, China)
Na Ta (State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, China)
Zhushi Rao (State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, China and Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 10 June 2021

Issue publication date: 3 August 2021

176

Abstract

Purpose

The purpose of this paper is to study the flow field characteristics of the micro-scale textured bearing surfaces using the lattice Boltzmann method based on the microscopic dynamics of the fluid.

Design/methodology/approach

Considering the inertia effects and the micro-scale effects, the models of a single micro-scale texture unit cell with different shapes and different film thickness ratios are established. The influence of pressure difference between inlet and outlet of the unit cell on flow characteristics is studied.

Findings

The surface pressure distribution, flow patterns and pressure contours in the flow field are obtained. The results reveal that the pressure difference has a significant influence on the characteristics of the micro-textured flow field.

Originality/value

The results have certain guiding significance for further step investigation on microscopic lubrication mechanism of the water-lubricated polymer bearings.

Keywords

Acknowledgements

The authors thank the editor and reviewers for their helpful comments and suggestions. The authors gratefully acknowledge the financial support of this study by the National Natural Science Foundation of China (Grant No. 11672178, Grant No.11802175) and the Science and Technology Commission of Shanghai Municipality (Grant No. 19511133002).

Citation

Jiao, C., Xu, J., Zou, D., Ta, N. and Rao, Z. (2021), "Flow field characteristics of micro-scale textured surfaces of water-lubricated bearings using lattice Boltzmann method", Industrial Lubrication and Tribology, Vol. 73 No. 5, pp. 736-741. https://doi.org/10.1108/ILT-02-2021-0056

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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