Experiments were performed, using a five blade model propeller, in order to investigate the possibilities of using the large NSP cavitation tunnel in the acoustical study of propeller cavitation. The influence of the hydrodynamic characteristics in the tunnel on the sound transmission to the tunnel wall was investigated. The transfer functions fluctuate strongly, even at a given water velocity or static pressure, probably due to poor acoustic damping in the tunnel circuit. For a turning propeller, the acoustic response of the tunnel wall due to propeller cavitation is very stable, since the degree of turbulence in the water, and thus the absorption, are very high.
Use of the Cavitation Tunnel at the Dutch Naval Experiment Station (Nsp), Wageningen for the Determination of the Acoustic Source Strength of Propeller Cavitation Het Gebruik van de Cavitatietunnel van Het Nsp Te Wageningen voor de Bepaling van de Akoestische Bronsterkte van Schroefcavitatie
1981
44 pages
Report
No indication
English
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