Current Research in Cavitating Fluid Films
Abstract
The 1988 STLE Annual Meeting held a two-session symposium on cavitation in fluid films. This paper is an edited review of the current research as discussed by the invited participants. Phenomena and experimental observations included gaseous cavitation, vapor cavitation, and gas entrainment. Cavitation in flooded, starved, and dynamically loaded journal bearings, as well as squeeze-film dampers was reviewed. Observations of cavitation damage in bearings and the possibility of cavitation between parallel plates with microasperities were discussed. The session on theoretical modeling summarized the transcavity fluid transport process, meniscus motion, and geometry, or form, of the film during rupture and reformation. Performance effects were related to heat-transfer models in the cavitated region and hysteresis influences on rotor- dynamic coefficients. Contributors presented a number of cavitation algorithms together with solution procedures using the finite-difference and finite-element methods. Although Newtonian fluids were assumed in most of the discussions, the effect of non-Newtonian fluids on cavitation was also discussed. (JS)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1989
- Accession Number
- ADA230773
Entities
People
- D. E. Brewe
- J. H. Ball
- M. M. Khonsari
Organizations
- National Aeronautics and Space Administration