A Water Tunnel Air Content Meter

John M. Killen, John F. Ripken

Research output: Book/ReportOther report


This paper describes a system for measuring the size and concentration of free air bubble nuclei in the limited ranges of size and concentration thought to exist in a water tunnel. The system is based on measuring the amplitude attenuation of an acoustic pulse of sound as it is propagated across a water tunnel test section. An arbitrary method is proposed for converting the measured sound attenuation into size and concentration of air bubbles.
Original languageEnglish (US)
StatePublished - Feb 1964


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