On the occurrence of negative groove flow rate in twin groove hydrodynamic journal bearings

Authors :: Brito, F. P.
Miranda, A. S.
Claro, José Carlos Pimenta
Teixeira, J. Carlos
Costa, Lucrécio
Fillon, M.
Universidade do Minho
Publication Year :: 2012
Publisher :: Instituto de Engenharia Mecânica e Gestão Industrial (INEGI), 2012.
Abstract: This paper describes the phenomenon of negative flow rate (hot oil reflux) occurring in one of the grooves of twin axial groove hydrodynamic journal bearings. This rarely described phenomenon, which can occur under severe operating conditions, increases the risk of bearing seizure. Existing codes for predicting bearing behaviour do not seem to be suitably incorporating this phenomenon into the analysis. The present work reports some experimental observations of the phenomenon and the way it can be taken into account in theoretical modelling.<br />FCT - POCTI/39202/EME/2001 & PhD grant SFRH/BD/22278/2005

Subjects :: Feeding conditions
Journal bearings
Science & Technology
Engenharia e Tecnologia::Engenharia dos Materiais
Hydrodynamic lubrication

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