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Cavitation Inception Noise from Stationary and Rotating Rods and Correspondence to Model Propeller Cavitation Noise

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This paper presents the results of noise measurements and observations of stationary and rotating roils, as well as a model propeller at cavitation inception. The analysis of the noise spectra show that there is a good correspondence between the cavitation noise generated by the model propeller and corresponding rotating rod. While there are similarities in the cavitation noise generated by the stationary and rotating rods, the caviliition inception conditions and patterns are different. [(is shown that the cavitation noise spectra can be scaled for rods of different sizes.

Zusammenfassung

In dieser Arbeit werden Ergebnisse von Geräuschmessungen und Beobachtungen beim Kavitationseinsatz an stationären und rotierenden Stäben ebenso wie an Modellpropellern vorgestellt. Die Untersuchung der Geräuschspektren zeigt, daß es eine deutliche Übereinstimmung zwischen dem Kavitationsgeräusch von einem Modellpropeller und dem entsprechenden rotierenden Stab gibt. Während es Ähnlichkeiten im Kavitationsgeräusch von stationären und rotierenden Stäben gibt, sind die Bedingungen des Kavitationseinsatzes und des Kavitationsfeldes unterschiedlich. Es wird gezeigt, daß die Spektren des Kavitationsgeräusches für Stäbe verschiedener Größe skaliert werden kännen.

Sommaire

Cet article présente les résultats de mesures du bruit produit è l'apparition de la cavitation par des arbres stationnaires et en rotation, et par un modèle d'hélice. L'analyse des specters montre que la correspondance est bonne entre les deux types de bruits. Bien qu'il y ait des similarités entre les bruits de cavitation des arbres stationnaires et tournants, les conditions d'introduction de la cavitation et leurs répartitions sont différentes. On montre que les spectres de bruits de cavitation peuvent être transposés a des arbres de différentes dimensions.
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Document Type: Research Article

Publication date: March 1, 1995

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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