北京航空航天大学学报 ›› 2016, Vol. 42 ›› Issue (2): 265-272.doi: 10.13700/j.bh.1001-5965.2015.0107

• 论文 • 上一篇    下一篇

基于CFD的斜盘/滑靴副油膜特性分析

马纪明1, 申亚勇1, 李齐林2   

  1. 1. 北京航空航天大学中法工程师学院, 北京 100083;
    2. 中航工业金城南京机电液压工程研究中心, 南京 211140
  • 收稿日期:2015-03-04 出版日期:2016-02-20 发布日期:2016-03-01
  • 通讯作者: 马纪明,Tel.:010-82339761 E-mail:jiming.ma@buaa.edu.cn E-mail:jiming.ma@buaa.edu.cn
  • 作者简介:马纪明 男,博士,高级实验师。主要研究方向:液压元件与系统设计、机电系统仿真。Tel.:010-82339761 E-mail:jiming.ma@buaa.edu.cn
  • 基金资助:
    国家自然科学基金(51205007)

Oil film analysis of swash plate/slipper pair based on CFD

MA Jiming1, SHEN Yayong1, LI Qilin2   

  1. 1. Sino-French Engineer School, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. Jincheng Nanjing Electrical and Hydraulic Engineering Research Center of AVIC, Nanjing 211140, China
  • Received:2015-03-04 Online:2016-02-20 Published:2016-03-01

摘要: 结合三维Navier-Stokes方程和任意拉格朗日-欧拉(ALE)描述方法,首先,提出了一种基于计算流体力学(CFD)的滑靴副油膜特性分析方法,该方法能综合考虑滑靴副结构参数、柱塞泵工况参数对油膜特性的影响。然后,针对某种滑靴副结构,仿真得到了24种不同工况下的油膜厚度,分析了工况(温度、转速和出口压力)与滑靴副油膜的定量关系。本文还提出了一个与油膜特性相关的液动力参数的描述公式,并基于某固定结构尺寸的滑靴副CFD仿真结果,研究证明了对于固定结构的滑靴副结构,该参数仅与油液黏度(温度)相关,与其他工况参数无关。根据液动力参数公式,可以方便地给出滑靴副油膜厚度的解析方法。最后,将基于解析方法与基于CFD仿真方法得到的油膜厚度结果进行了对比,证明了解析方法的准确性。

关键词: 柱塞泵, 斜盘/滑靴副, 油膜, 计算流体力学, 润滑

Abstract: The 3-D Navier-Stokes equations and arbitrary Lagrangian-Eulerian (ALE) method are firstly used to present the oil film analysis method based on computational fluid dynamics (CFD), which can describe the correlation among slipper structure parameters, running conditions and oil film thickness. Then, the oil film thicknesses of a slipper bearing under 24 different running conditions are obtained by simulation method. A function is consequently obtained based on the simulation results, which can express the relationships between running conditions (temperature, rotation speed, and outlet preesure) and oil film thickness. Furthermore, an equation of hydraulic dynamic parameter is provided and used to express the oil film thickness analytically. Based on the CFD simulation results, the parameter is proven to be only related with the oil viscosity (temperature) under fixed design structure, and unrelated with other running conditions, such as rotation, pressure, and so on. It is convenient for designer to derive the oil film thickness expression equation. Finally, we compared the oil film thicknesses obtained from analytical and CFD methods, and the results show that the presented method is feasible.

Key words: piston pump, swash plate/slipper pair, oil film, computational fluid dynamics, lubrication

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