PROPELLER CAVITATION NOISE AFTER 35 YEARS OF STUDY
A reexamination of old experimental data indicates that it may be feasible to perform scale-model measurements of propeller cavitation noise to predict the noise level and spectrum of the noise generated by the full-size prototype. The levels cannot be predicted as a function of the absolute value of the cavitation number sigma, but rather only as a function of a cavitation intensity ratio. It is not yet possible unfortunately, to estimate the inception cavitation number of the prototype from model measurements without using empirically or theoretically determined scale factors. The proposed scaling relations for noise generation are verified by the old full size and model data, where tip-vortex cavitation was the source of noise. No comparable data for other forms of cavitation have been found permitting comparison with the proposed scaling relations.
- Noise and Fluids Engineering, Presented at the Winter Annual Meeting of ASME, Atlanta, Georgia, November 27-December 2, 1977.
American Society of Mechanical EngineersThree Park Avenue
New York, NY USA 10016-5990
- Strasberg, M
- Publication Date: 1977
- Features: References;
- Pagination: v.p.
- TRT Terms: Cavitation (Mechanics); Cavitation erosion; Cavitation noise; Flow; Fluid dynamics; Measurement; Noise; Propellers; Sound level; Submarines; Wakes
- Uncontrolled Terms: Noise measurement
- Old TRIS Terms: Cavitating propellers; Flow of fluids; Noise intensity
- Subject Areas: Environment; Marine Transportation; Vehicles and Equipment;
- Accession Number: 00178966
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Aug 19 1978 12:00AM