Hydroacoustic Characterisation of the AMC Cavitation Tunnel

Abstract

This paper presents recent results from an Industry-University-Defence collaborative project whose aim is to characterisethe hydroacoustic environment of the Australian Maritime College Cavitation Tunnel. After summarising theoperation of the tunnel, a methodology for measuring and processing the hydroacoustic measurements is presentedthat includes a technique for reducing the level of turbulent wall pressure fluctuations on the hydrophone measurement.The background noise levels of the tunnel are presented for a variety of operating conditions and they comparefavourably with other hydroacoustic test faciltities internationally.