This paper presents a technique for the study of the mechanisms responsible for the generation of noise from cavitating propellers. The experimental method, which involves the cross-correlation of the pressure gradient in the near-field of the propeller with far-field sound, allows the determination of the spatial distribution of acoustic source strength on and near the cavitating propeller. Cross-Correlations performed at a number of points along a track parallel to the axis of the propeller indicate that the majority of noise from propeller producing vortex cavitation originates from the region of vortex collapse. A bubble cavitation propeller showed a region of relatively constant source strength distribution from the propeller disk region downstream to the point of vortex collapse . All propellers tested showed a slow decay of acoustic source strength with downstream distance after vortex collapse. This result may be indicative of significant amounts of sound being produced by bubble rebounds in the propeller wake.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Study of propeller cavitation noise using cross-correlation methods


    Additional title:

    Untersuchung des Propeller-Kavitationsgeraeusches unter Benutzung der Kreuzkorrelations-Methode


    Contributors:

    Published in:

    Publication date :

    1982


    Size :

    17 Seiten


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




    The study of propeller cavitation noise using cross-correlation methods

    Leggat, L.J. / Sponagle, N.C. | Tema Archive | 1985


    PROPELLER CAVITATION AND NOISE REDUCTION

    TAYLOR DAVID / ATLAR MEHMET / AKTAS BATUHAN | European Patent Office | 2022

    Free access

    PROPELLER CAVITATION AND NOISE REDUCTION

    TAYLOR DAVID | European Patent Office | 2018

    Free access

    Propeller cavitation noise after 35 years of study

    Strasberg, M. | Tema Archive | 1979


    Propeller cavitation

    Eggert, E.F. | Engineering Index Backfile | 1932