Aspects of Flow and Cavitation Around an EHL Contact

E. van Emden, Cornelis H. Venner, G.E. Morales-Espejel

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

This paper focuses on the flow around an elasto-hydrodynamically lubricated ball-on-disc contact. Experiments in the low velocity regime with a small amount of lubricant show two flow states. When the lubricant supply at the inlet side is sufficient, a cavitation bubble is observed at the outlet side of the contact. The bubble length depends on the rolling velocity and the lubricant viscosity. After a sudden stop this bubble breaks up into smaller bubbles that subsequently escape the flooded region. A dimensionless relation is presented that describes the length of the cavitation bubble relative to the contact radius. A theoretical study shows that the length of the bubble cannot be predicted with common EHL models based on a pressure criterion. Aspects of Flow and Cavitation Around an EHL Contact. Available from: https://www.researchgate.net/publication/285782614_Aspects_of_Flow_and_Cavitation_Around_an_EHL_Contact [accessed Jan 28, 2016].
Original languageEnglish
Pages (from-to)435-448
JournalTribology international
Volume95
DOIs
Publication statusPublished - 28 Jan 2016

Fingerprint

cavitation flow
Cavitation
Contacts (fluid mechanics)
bubbles
Lubricants
lubricants
Bubbles (in fluids)
side inlets
Viscosity
outlets
low speed
escape
balls
viscosity
radii
Experiments

Keywords

  • IR-99426
  • METIS-315333

Cite this

van Emden, E. ; Venner, Cornelis H. ; Morales-Espejel, G.E. / Aspects of Flow and Cavitation Around an EHL Contact. In: Tribology international. 2016 ; Vol. 95. pp. 435-448.
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Aspects of Flow and Cavitation Around an EHL Contact. / van Emden, E.; Venner, Cornelis H.; Morales-Espejel, G.E.

In: Tribology international, Vol. 95, 28.01.2016, p. 435-448.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

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AU - Venner, Cornelis H.

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N2 - This paper focuses on the flow around an elasto-hydrodynamically lubricated ball-on-disc contact. Experiments in the low velocity regime with a small amount of lubricant show two flow states. When the lubricant supply at the inlet side is sufficient, a cavitation bubble is observed at the outlet side of the contact. The bubble length depends on the rolling velocity and the lubricant viscosity. After a sudden stop this bubble breaks up into smaller bubbles that subsequently escape the flooded region. A dimensionless relation is presented that describes the length of the cavitation bubble relative to the contact radius. A theoretical study shows that the length of the bubble cannot be predicted with common EHL models based on a pressure criterion. Aspects of Flow and Cavitation Around an EHL Contact. Available from: https://www.researchgate.net/publication/285782614_Aspects_of_Flow_and_Cavitation_Around_an_EHL_Contact [accessed Jan 28, 2016].

AB - This paper focuses on the flow around an elasto-hydrodynamically lubricated ball-on-disc contact. Experiments in the low velocity regime with a small amount of lubricant show two flow states. When the lubricant supply at the inlet side is sufficient, a cavitation bubble is observed at the outlet side of the contact. The bubble length depends on the rolling velocity and the lubricant viscosity. After a sudden stop this bubble breaks up into smaller bubbles that subsequently escape the flooded region. A dimensionless relation is presented that describes the length of the cavitation bubble relative to the contact radius. A theoretical study shows that the length of the bubble cannot be predicted with common EHL models based on a pressure criterion. Aspects of Flow and Cavitation Around an EHL Contact. Available from: https://www.researchgate.net/publication/285782614_Aspects_of_Flow_and_Cavitation_Around_an_EHL_Contact [accessed Jan 28, 2016].

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