Cavitation Inception and Internal Flows with Cavitation. The Fourth David W. Taylor Lecture,
Abstract
There is now a much clearer understanding, than formerly, of the role of the viscous boundary-layer flow on smooth bodies in cavitation inception. Similarly, the necessity of carefully describing the form and extent of cavitation, both at its onset and developed states for the formulation of realsitic physical models, seems well appreciated. New experimental techniques, including the measurement of freestream cavitation 'nuclei',have appeared; these promise to put laboratory and field studies of cavitation on a new quantitative level. The presently available cavitation-inception scaling concepts are considerably improved and more physically based than formerly. With all these new advances it is still not possible to predict with certainty the location, form, and onset conditions required for cavitation in an arbitrary flow. This is particulary so for unsteady cavitating flows. These flows, in addition because of the volume change of the cavitation itself, may experience large unsteady interactions with neighboring surfaces or flow fields. Initial attempts at sorting out these mutual effects for certain well-defined hydraulic systems have met with some success.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA075893
Entities
People
- Allan J. Acosta