Whistling of restriction orifices: aeroacoustic source identification

J. Golliard, N. González Díez, Gunes Nakiboǧlu, A. Hirschberg

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


    The study presents a simple source identification method applied to restriction orifices. A restriction orice in a duct can whistle when it is submitted to a low Mach number flow. The orice acts as an amplifier for the incident acoustic energy. The method, earlier presented by Martinez-Lera et al1 and improved by Nakiboglu et al,2 combines incompressible numerical simulations with vortex sound theory. The application of the method to the source identification of whistling restriction orifices predicts whistling at Strouhal numbers similar to earlier experimental and numerical studies, with limited computational effort.

    Original languageEnglish
    Title of host publication17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
    Place of PublicationReston
    PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
    Number of pages7
    ISBN (Print)978-1-60086-943-3
    Publication statusPublished - 1 Dec 2011
    Event17th AIAA/CEAS Aeroacoustics Conference - Portland, United States
    Duration: 5 Jun 20118 Jun 2011


    Conference17th AIAA/CEAS Aeroacoustics Conference
    Country/TerritoryUnited States
    Other32nd AIAA Aeroacoustics, 5-8 June 2011, Portland, Or


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