期刊论文

Analysis on penetration mechanism of oil jet lubrication for high speed rolling bearing

中文

航空动力学报

Hangkong Dongli Xuebao/Journal of Aerospace Power

1000-8055

2016

31

7

1766-1776

10.13224/j.cnki.jasp.2016.07.028

国家自然科学基金(U1404517)； 清华大学国家重点实验室开放基金(SKLTKF13A03)；

本校为其他机构

基于空气动力学研究高速滚动轴承环间气流特性,通过建立气相流数学模型和气液两相流数学模型研究润滑油在轴承环间的穿透过程,探究高DN值时润滑油的穿透机理.利用流体体积(VOF)模型对此状态下的空气和润滑油界面进行动态捕捉,以研究润滑油的运动过程、分布特点以及不同参数对环间油液体积分数的影响,得到了高速滚动轴承环间气相流的特性;润滑油在不同转速下进入轴承环间的运动过程;轴承环间气液两相流场的压力、速度特性;轴承环间初始气流场对润滑油进入的影响.结果表明:在轴承小端面靠近内圈附近喷油可以避免湍流对润滑油的影响和干扰,有利于润滑油进入环间;轴承环间存在有利于润滑油贴滚道运动...

Based on aerodynamics, the airflow characteristics between bearing rings of high-speed bearings were researched. And the movement process of the lubrication oil between bearing rings was analyzed by establishing the mathematical model of gas phase flow and gas-liquid two-phase flow, so as to explore the penetration mechanism of the lubrication oil at a high DN value. The original data of the gas-liquid two-phase flow between bearing rings were obtained. And then, the VOF (volume of fluid) model was applied to numerical analysis on the gas-liquid two-phase flow of lubrication oil interacting wi...