An Acoustic Detection Method of Cloud Cavitation

[+] Author and Article Information
C. Arai

Ship Propulsion Division, Ship Research Institute, Ministry of Transport, Mitaka, Tokyo, Japan

J. Fluids Eng 106(4), 466-475 (Dec 01, 1984) (10 pages) doi:10.1115/1.3243150 History: Received February 09, 1984; Online October 26, 2009


This paper deals with an investigation of a method which detects the generation of cloud cavitation by the measurement of cavitation noise. Cavitation noise consists of a pulse train with approximately 1 μs rise time and 10 μs duration and has almost ultrasonic characteristics. By utilizing these chracteristics, the pulses of cavitation noise were measured, and a chart of cumulative pulseheight frequency was obtained. On this chart, the noise pattern due to cloud cavitation on a propeller working in nonuniform flow was clearly distinguished from other cavitation patterns.

Copyright © 1984 by ASME
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