Cavitation Inception on Rotating Rods

Abstract

In order to investigate the character of cavitation inception from rotating rods, a series of experiments were performed in the 5000x450x450 mm test section of the University of Tokyo Propeller Cavitation Tunnel. This paper presents a summary of the experimental design, a comparison of the cavitation patterns for stationary and rotating rods, and the measured noise spectrum. The test results showed that for the smaller Rod I the pattern and noise spectra of the cavitation are similar. In the case of the larger Rods 11 and III, there is some difference in the patterns and corresponding noise levels.