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A novel quasi-3D thermodynamic model of oil film bearing with non-Newtonian and temperature-viscosity effects

Feng Liang (School of Aerospace Engineering, Tsinghua University, Beijing, China)
Quanyong Xu (School of Aerospace Engineering, Tsinghua University, Beijing, China)
Ming Zhou (School of Aerospace Engineering, Tsinghua University, Beijing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 4 September 2017

131

Abstract

Purpose

The purpose of this paper is to propose a quasi-three-dimensional (3D) thermohydrodynamic (THD) model for oil film bearings with non-Newtonian and temperature-viscosity effects. Its performance factors, including precision and time consumption, are investigated.

Design/methodology/approach

Two-dimensional (2D), 3D and quasi-3D numerical models are built. The thermal and mechanical behaviors of two types of oil film bearings are simulated. All the results are compared with solutions of commercial ANSYS CFX.

Findings

The 2D THD model fails to predict the temperature and pressure field. The results of the quasi-3D THD model coincide well with those of the 3D THD model and CFX at any condition. Compared with the 3D THD model, the quasi-3D THD model can greatly reduce the CPU time consumption, especially at a high rotational speed.

Originality/value

This quasi-3D THD model is proposed in this paper for the first time. Transient mechanical and thermal analyses of high-speed rotor-bearing system are widely conducted using the traditional 3D THD model; however, the process is very time-consuming. The quasi-3D THD model can be an excellent alternative with high precision and fast simulation speed.

Keywords

Citation

Liang, F., Xu, Q. and Zhou, M. (2017), "A novel quasi-3D thermodynamic model of oil film bearing with non-Newtonian and temperature-viscosity effects", Industrial Lubrication and Tribology, Vol. 69 No. 5, pp. 638-644. https://doi.org/10.1108/ILT-01-2016-0015

Publisher

:

Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited

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