PREDICTION OF PROPELLER CAVITATION NOISE AND ITS COMPARISON WITH FULL SCALE MEASUREMENT

This paper deals with the prediction of propeller cavitation noise through model tests in a cavitation tunnel and theoretical calculations. Results are compared with full-scale measurements for two ships, a cargo liner and a training ship. It is proposed that because of the different noise-generated mechanisms involved, blade rate tones and broadband noise be separately estimated in both model experiments and theoretical calculations. In the model experiments, the acoustical-mechanical reciprocity technique was applied for the estimation of blade rate tones and a theoretical estimate formula supported the experimental prediction of low-frequency broadband noise. Full scale measurements of far-field noise were carefully planned to obtain reliable data--for example, to eliminate the effects of sound reflection at the sea surface. Predictions and full-scale measurements showed reasonable agreement.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05148499
• Supplemental Notes:
  • Journal article
• Authors:
  • Okamura, N
  • ASANO, T
• Publication Date: 1988-12

Language

• Japanese

Media Info

• Features: References;
• Pagination: 11 p.
• Serial:
  • Journal of the Society of Naval Architects of Japan
  • Volume: 164
  • ISSN: 0514-8499

Subject/Index Terms

• TRT Terms: Alternatives analysis; Cavitation (Mechanics); Cavitation erosion; Cavitation noise; Forecasting; Propellers; Prototype tests
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00657042
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM