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

作者：Liang, Feng; Xu, Quanyong^*; Zhou, Ming

来源：Industrial Lubrication and Tribology, 2017, 69(5): 638-644.

DOI：10.1108/ILT-01-2016-0015

• Lubrication
• Thermodynamics
• Dawson equation
• Oil film
• Quasi-3D

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.

• 出版日期2017
• 单位清华大学