SOME EFFECTS OF MACROMOLECULES ON CAVITATION INCEPTION AND NOISE,
Abstract
The investigation was of an exploratory nature and was undertaken to determine whether dilute solutions of macromolecules in water had any effect on flow generated cavitation inception and noise. The results reveal a definite inhibition of cavitation inception on a one-quarter inch diameter model with a hemispherical nose at flow velocities of forty to fifty feet per second. This effect was quite marked and at concentrations of fifty parts per million by weight polyethylene oxide reduced the cavitation parameter at inception by almost a factor of two. Noise from the cavitation as received from a transducer within the model appeared to decay in intensity soon after cavitation was established. This was not observed with water alone. Quantitative measurements of this effect were not attempted. A discussion of a possible mechanism for cavitation inhibition is given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1967
- Accession Number
- AD0666012
Entities
People
- Albert T. Ellis
Organizations
- California Institute of Technology