Micro-Roughness Effects in (Elasto)Hydrodynamic Lubrication Including a Mass-Flow Preserving Cavitation Model

Guy Bayada (1, 2, 3) , Sébastien Martin (1) , Carlos Vazquez (4)

1 ICJ - Institut Camille Jordan
2 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
3 TMI - Tribologie et Mécanique des Interfaces
4 DEP. MATEMATICAS (UNIVERSIDADE A CORUÑA) - Dep. Matematicas (Universidade A Coruña)

An average Reynolds equation is proposed for predicting the effects of deterministic periodic roughness, taking JFO mass flow preserving cavitation model and elastohydrodynamic effects into account. For this, the asymptotic model is based upon double scale analysis approach. The average Reynolds equation can be used both for microscopic interasperity cavitation and macroscopic one. The validity of such a model is verified by numerical experiments.

Mots clés: Elastohydrodynamic; Lubrication; Roughness

Domaines: Analyse numérique [math.NA]; Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Guy Bayada, Sébastien Martin, Carlos Vazquez. Micro-Roughness Effects in (Elasto)Hydrodynamic Lubrication Including a Mass-Flow Preserving Cavitation Model. 2007. ⟨hal-00008355v2⟩