Cavitation Inception.
Abstract
The present research effort on a special topic of Cavitation Inception was initiated on 1 July 1983 and was continued through June 30, 1987. This special area of interest was specifically directed towards the observation of microparticulates and microbubbles in the natural waters of the ocean. The motivation for this example of field work in the study of cavitation inception is that there is, even today, a great scarcity of information about the concentrations of microparticulates of all types in the natural waters that ships and all naval equipment may be expected to operate within. This is an important issue for several reasons; first of all it is known that an absence of microbubbles in laboratory cavitation test facilities leads to erroneous estimates of the inception of cavitation itself and the form and extent of the patterns that develop subsequent to the onset of cavitation. These kinds of laboratory cavitation scaling problems were beautifully exemplified in cavitation tests in the Netherlands vacuum towing tank where to achieve even rough cavitation similarity with prototypical propeller cavitation performance the waters of the towing tank had to be seeded with microbubbles formed by electrolysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 21, 1987
- Accession Number
- ADA189220
Entities
People
- Allan J. Acosta
Organizations
- California Institute of Technology