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A Wide σ-Range Rule for Frequency Scaling of Propeller Cavitation Noise Spectra

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Experimental data collected in an onboard measurement are applied to check some of the rules used for scaling the frequency of the maximum of a propeller cavitation noise spectrum. The rules proposed by Blake and Ross prove applicable only in incipient, viz. developed cavitation regimes, whereas a new rule in the form of a smooth analytical combination of these two rules is, in both classes of regimes, in good agreement with the propeller data, and also with the data on rotating rod cavitation noise of Lesunovskii and Khokha. However, the new rule does not comply with some published data on hydrofoil and model propeller cavitation noise.


Experimented Daten von Bordmessungen werden zur Überprüfung einiger Regeln für die Skalierung der Maximumsfrequenz von propellererzeugten Kavitationsspektren herangezogen. Die von Blake und Ross vorgeschlagenen Regeln erweisen sich nur für Bereiche der beginnenden oder der entwickelten Kavitation als brauchbar, während eine neue Regel in Form einer analytischen Kombination für beide Bereiche gut mit Propellerdaten und auch mit den Daten für das Kavitationsgeräusch des rotierenden Stabs nach Lesunovskii und Khokha übereinstimmen. Allerdings deckt sich die neue Regel nicht mit einigen veröffentlichten Meßwerten des Kavitations-geräuschs von hydrofoils und Propellern.


Pour tester les méthodes utilisées pour déterminer la fréquence du maximum du spectre de bruit de cavitation des hélices, on a exploité les données d'une campagne de

mesures à bord. Il apparaît que les méthodes de Blake et de Ross ne sont applicables qu'aux régimes de cavitation naissant ou entretenu, mais une méthode nouvelle, utilisant une combinaison analytique adoucie des deux précédentes rend bien compte, pour les deux types de régimes, des données d'hélice ainsi que des données de Lesunovskii et Khokha sur le bruit de cavitation d'arbre. Toutefois cette nouvelle méthode n'est pas en accord avec certaines données publiées relatives aux hydrofoils, et certains modèles de bruit de cavitation d'hélice.
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Document Type: Research Article

Publication date: January 1, 1994

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  • 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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