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Impact of lubricant contamination with water on hydrodynamic thrust bearing performance

Published online by Cambridge University Press:  15 September 2011

Elias Harika ,
Mathieu Helene ,
Jean Bouyer  and
Michel Fillon
Elias Harika*
Affiliation:
EDF R&D Département AMA/Groupe T63, 1 avenue du Général de Gaulle, Bureau IB008, 92141 Clamart Cedex, France
Mathieu Helene
Affiliation:
EDF R&D Département AMA/Groupe T63, 1 avenue du Général de Gaulle, Bureau IB008, 92141 Clamart Cedex, France
Jean Bouyer
Affiliation:
Institut Pprime, Département Génie Mécanique et Systèmes Complexes CNRS, Université de Poitiers, ENSMA, UPR 3346, SP2MI, Bd Marie et Pierre Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
Michel Fillon
Affiliation:
Institut Pprime, Département Génie Mécanique et Systèmes Complexes CNRS, Université de Poitiers, ENSMA, UPR 3346, SP2MI, Bd Marie et Pierre Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
*
a Corresponding author: elias.harika@edf.fr
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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.

Keywords

Thrust bearingtilting padswater contaminationviscosityemulsionButée à patins oscillantspollution par de l’eauviscositéémulsion
Type
Research Article
Information
Mechanics & Industry , Volume 12 , Issue 5 , 2011 , pp. 353 - 359
Copyright
© AFM, EDP Sciences 2011

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