In-situ Measurement of Acoustic Impedance in Presence of Grazing Flow

Authors

  • Xukun Feng Université de Sherbrooke, CA
  • Zacharie Laly Université de Sherbrooke, CA
  • Noureddine Atalla Université de Sherbrooke, CA

Abstract

Perforated plates are often used to control noise in different applications, including architectures and intake or exhausst of engines. The key parameter acoustic impedance of such component depends on different parameters such as sound pressure level,sound incidence angle,grazing/bias flow rate and even temperature. Normal incidence impedance of perforated plates is widely investigated via a standard impedance tube while in many cases, the sound propagates in a grazing incidence with a grazing mean flow over the perforated plate as found in the nacelle of aero-engine of muffler of an automotive engine. For the later, different techniques have been developped to determine acoustic impedance of perforated plate under grazing flow.In this paper, a direct in-situ method is used to experimentally study the effect of grazing flow on perforated plate acoustic impedance.

Additional Files

Published

2023-10-09

How to Cite

1.
Feng X, Laly Z, Atalla N. In-situ Measurement of Acoustic Impedance in Presence of Grazing Flow. Canadian Acoustics [Internet]. 2023 Oct. 9 [cited 2024 Apr. 27];51(3):128-9. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/4024

Issue

Vol. 51 No. 3 (2023): Proceedings of Acoustics Week in Canada 2023 Conference

Section

Proceedings of the Acoustics Week in Canada

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.

Most read articles by the same author(s)

1 2 3 > >>