An average Reynolds equation capable of predicting the effects of roughness induced inter-asperity cavitation is introduced. The average Reynolds equation is based on the JFO cavitation model and the Patir and Cheng flow factor method. The flow factors are calculated in numerical experiments as functions of the local surface separation, surface statistics, and cavitation number. The model is extended into a universal average Reynolds equation capable of predicting the combined effects of inter-asperity cavitation and macroscopic cavitation. Both the Patir and Cheng method and the present model are verified in numerical experiments.
An Average Flow Model of Rough Surface Lubrication With Inter-Asperity Cavitation
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division May 4, 2000; revised manuscript received October 17, 2000. Associate Editor: L. San Andre´s.
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Harp, S. R., and Salant, R. F. (October 17, 2000). "An Average Flow Model of Rough Surface Lubrication With Inter-Asperity Cavitation ." ASME. J. Tribol. January 2001; 123(1): 134–143. https://doi.org/10.1115/1.1332397
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