Impact of lubricant contamination with water on hydrodynamic thrust bearing performance

Mecanique & Industries Pub Date : 2011-01-01 DOI:10.1051/MECA/2011120

E. Harika, M. Helene, J. Bouyer, M. Fillon

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引用次数: 19

Abstract

Several studies have been carried out in order to describe the impact of water-contaminated lubricants on lubrication performance. One approach considers the water-contaminated oil as a homogeneous lubricant with physical characteristics varying with water concentration. The presented work is being achieved in order to experimentally validate this theory. First investigations showed that the variation of contaminated lubricant viscosity has the most significant effect on lubricating performance. Consequently, the lubricant viscosity is the only parameter taken into account in this study. Thus, based on the rheological measurements, water-in-oil emulsion viscosity has been modelled according to water concentration and temperature. Water concentration was considered relatively to total mass of oil: the mass concentration varied then from 0 to 7% and temperature from 10 to 80 °C. Viscosity modelling was then used to perform the numerical simulations of a hydrodynamic thrust bearing supplied with water contaminated oil. Finally, the experimental validation will be done by measuring various bearing characteristics like the film/pad temperature, the film thickness and the friction torque on a tilting pad thrust bearing test rig.

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润滑油含水污染对流体动力推力轴承性能的影响

为了描述受水污染的润滑剂对润滑性能的影响，已经进行了一些研究。一种方法认为受水污染的油是一种均匀的润滑剂，其物理特性随水浓度的变化而变化。目前正在进行的工作是为了在实验上验证这一理论。首先研究表明，污染润滑油粘度的变化对润滑性能的影响最为显著。因此，润滑剂粘度是本研究中唯一考虑的参数。因此，在流变性测量的基础上，根据水浓度和温度建立了油包水乳状液粘度模型。水的浓度被认为是相对于油的总质量:质量浓度从0到7%变化，温度从10到80℃。在此基础上，利用黏度模型对含水含油的流体动力推力轴承进行了数值模拟。最后，在倾斜垫推力轴承试验台上，通过测量膜/垫温度、膜厚度和摩擦力矩等轴承特性进行实验验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mecanique & Industries 工程技术-工程：机械

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