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结合国外已有试验工作,提出描述轴承腔壁面油膜运动的分析模型,并进行若干工况条件的影响分析.研究结果表明,轴承腔中油膜流动具有累积特点,表现出在排出口之间油膜厚度逐渐增大;旋转件转速的增加减小了壁面油膜厚度,但却提高了油膜平均速度;随着入口滑油流量的增加,壁面油膜厚度和平均速度都随之增加.理论分析及其与试验工作的比较都表明,提出的基于试验研究预测轴承腔中油膜运动物理状态的方法,对于在有限试验条件下研究轴承腔中壁面油膜运动机理、继而开展轴承腔内传热分析和润滑分析,是有价值的技术途径.
According to the existing experimental work abroad, an analytical model describing the movement of the oil film on the bearing cavity wall is proposed and the influence of several working conditions is analyzed. The results show that the oil film flow in the bearing cavity has a cumulative characteristic that the oil film thickness Increasing with the increase of rotational speed of the rotating parts, the thickness of the oil film on the wall surface is reduced, but the average velocity of the oil film is increased, and the thickness and average velocity of the oil film on the wall surface increase with the increase of the inlet oil flow rate. The comparison of the work shows that the proposed method of predicting the physical state of the oil film in the bearing cavity based on the experimental study is very useful for studying the motion mechanism of the oil film on the wall surface in the bearing cavity under the limited experimental conditions and then conducting the heat transfer analysis and lubrication analysis in the bearing cavity Valuable technical way.