Analysis of bearing lubrication under dynamic loading considering micropolar and cavitating effects

被引：32
|
作者：
Wang, Xiao-Li [1 ]
Zhang, Jun-Yan [1 ]
Dong, Hui [1 ]
机构：
[1] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2011年 / 44卷 / 09期
基金：
北京市自然科学基金;
关键词：
Dynamically loaded journal bearing; Micropolar fluids; Cavitation; Mass conservation boundary condition; MICROCONTINUUM FLUID MECHANICS; HYDRODYNAMIC JOURNAL BEARINGS; ALGORITHM;
D O I：
10.1016/j.triboint.2011.05.002
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Numerical computation of the dynamically loaded journal bearings lubricated with micropolar fluids is undertaken based on the improved Elord cavitation algorithm and over-relaxation method. The results show that the average inflow and average outflow based on the mass conservation boundary conditions are almost equal, which is in accordance with the fact. However, under the Reynolds boundary conditions, large difference is shown between the average inflow and outflow. It is also demonstrated that with the micropolar fluids lubrication, the minimum film thickness, bearing capacity and friction power loss are increased while the maximum film pressure is decreased. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：1071 / 1075
页数：5
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