Roughness Effects on ITTC (International Towing Tank Conference) Propeller Cavitation,
Abstract
Different cavitation patterns are often observed between the model propeller and the full scale prototype. Scale effects on cavitation inception and cavity extend cause uncertainty in the extrapolation of test results from model to full scale. The International Towing Tank Conference Cavitation Committee recognized this undesirable cavitation scaling problem and proposed an international cooperative program to investigate the use of leading edge roughness to reduce the cavitation scaling problem. A 5-bladed bronze propeller was fabricated at MARIN (NSMB) in the Netherlands. The surfaces of blades 3 and 4 were sandblasted. Blade 5 was roughened with carborundum. The same propeller was tested in the facilities of the different committee members at the same loading conditions. The model propeller was tested in the DTRC 24-Inch Variable Pressure Water Tunnel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1988
- Accession Number
- ADA192137
Entities
People
- David W Taylor
- Kirk J. Anderson
- Young T. Shen