In this paper, we analyze the impact of the cavitation model on the numerical assessment of lubricated journal bearings. We compare results using the classical Reynolds model and the so-called model proposed by Elrod and Adams [1974, “A Computer Program for Cavitation and Saturation Problems,” Proceedings of the First LEEDS-LYON Symposium on Cavitation and Related Phenomena in Lubrication, Leeds, UK] to fix the lack of mass conservation of Reynolds’ model. Both models are known to give quite similar predictions of load-carrying capacity and friction torque in nonstarved conditions, making Reynolds’ model the preferred model for its better numerical behavior. Here, we report on numerical comparisons of both models in the presence of microtextured bearing surfaces. We show that in the microtextured situation, Reynolds’ model largely underestimates the cavitated area, leading to inaccuracies in the estimation of several variables, such as the friction torque. This dictates that only mass-conserving models should be used when dealing with microtextured bearings.
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e-mail: rfausas@gmail.com
e-mail: patrick.ragot@renault.com
e-mail: mohammed.jai@insa-lyon.fr
e-mail: guy.bayada@insa-lyon.fr
e-mail: gustavo@cab.cnea.gov.ar
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October 2007
Technical Papers
The Impact of the Cavitation Model in the Analysis of Microtextured Lubricated Journal Bearings
Roberto Ausas,
e-mail: rfausas@gmail.com
Roberto Ausas
Centro Atómico Bariloche
, 8400 Bariloche, Argentina; Instituto Balseiro
, 8400 Bariloche, Argentina
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Patrick Ragot,
Patrick Ragot
RENAULT, Direction de l’Ingeniere Mecanique,
e-mail: patrick.ragot@renault.com
Service Mecanique des Solides et Thermique (66151)
, F-92508 Rueil Malmaison, France
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Jorge Leiva,
Jorge Leiva
Centro Atómico Bariloche
, 8400 Bariloche, Argentina; Instituto Balseiro
, 8400 Bariloche, Argentina
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Mohammed Jai,
Mohammed Jai
Mathématiques,
e-mail: mohammed.jai@insa-lyon.fr
INSA de Lyon
, CNRS-UMR 5208, Bâtiment Leonardo da Vinci, F-69621 Villeurbanne, France
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Guy Bayada,
Guy Bayada
Mathématiques,
e-mail: guy.bayada@insa-lyon.fr
INSA de Lyon
, CNRS-UMR 5208, Bâtiment Leonardo da Vinci, F-69621 Villeurbanne, France; LAMCOS, INSA de Lyon
, CNRS-UMR 5259, Bâtiment Leonardo da Vinci, F-69621 Villeurbanne, France
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Gustavo C. Buscaglia
e-mail: gustavo@cab.cnea.gov.ar
Gustavo C. Buscaglia
Centro Atómico Bariloche
, 8400 Bariloche, Argentina; Instituto Balseiro
, 8400 Bariloche, Argentina; ICMC, Universidade de São Paulo
, 13560-970 São Carlos, São Paulo, Brazil
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Roberto Ausas
Centro Atómico Bariloche
, 8400 Bariloche, Argentina; Instituto Balseiro
, 8400 Bariloche, Argentinae-mail: rfausas@gmail.com
Patrick Ragot
RENAULT, Direction de l’Ingeniere Mecanique,
Service Mecanique des Solides et Thermique (66151)
, F-92508 Rueil Malmaison, Francee-mail: patrick.ragot@renault.com
Jorge Leiva
Centro Atómico Bariloche
, 8400 Bariloche, Argentina; Instituto Balseiro
, 8400 Bariloche, Argentina
Mohammed Jai
Mathématiques,
INSA de Lyon
, CNRS-UMR 5208, Bâtiment Leonardo da Vinci, F-69621 Villeurbanne, Francee-mail: mohammed.jai@insa-lyon.fr
Guy Bayada
Mathématiques,
INSA de Lyon
, CNRS-UMR 5208, Bâtiment Leonardo da Vinci, F-69621 Villeurbanne, France; LAMCOS, INSA de Lyon
, CNRS-UMR 5259, Bâtiment Leonardo da Vinci, F-69621 Villeurbanne, Francee-mail: guy.bayada@insa-lyon.fr
Gustavo C. Buscaglia
Centro Atómico Bariloche
, 8400 Bariloche, Argentina; Instituto Balseiro
, 8400 Bariloche, Argentina; ICMC, Universidade de São Paulo
, 13560-970 São Carlos, São Paulo, Brazile-mail: gustavo@cab.cnea.gov.ar
J. Tribol. Oct 2007, 129(4): 868-875 (8 pages)
Published Online: April 12, 2007
Article history
Received:
November 2, 2006
Revised:
April 12, 2007
Citation
Ausas, R., Ragot, P., Leiva, J., Jai, M., Bayada, G., and Buscaglia, G. C. (April 12, 2007). "The Impact of the Cavitation Model in the Analysis of Microtextured Lubricated Journal Bearings." ASME. J. Tribol. October 2007; 129(4): 868–875. https://doi.org/10.1115/1.2768088
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