Isoparametric finite element using cubic hermite polynomials for acoustics in duct components with flow

Authors

  • D.C. Stredulinsky Defence Res. Establ. Atlantic, Dartmouth, NS, Canada
  • A. Craggs

Keywords:

acoustic wave propagation, aeroacoustics, channel flow, finite element analysis, resonance, isoparametric finite elements, cubic hermite polynomials, finite element model, duct system components, acoustic resonant frequencies, hard walled cavities, acoustic propagation characteristics, duct bends, junctions, higher order mode propagation, convective effect, low Mach number air flow

Abstract

Describes the development of a new finite element model to analyse the propagation of sound through duct system components. The element model was first tested by predicting the acoustic resonant frequencies of hard walled cavities. It was then used to predict the acoustic propagation characteristics of duct bends and junctions, including higher order mode propagation in attached straight ducts, and the convective effect of low Mach number air flow

Additional Files

Published

1991-07-01

How to Cite

1.
Stredulinsky D, Craggs A. Isoparametric finite element using cubic hermite polynomials for acoustics in duct components with flow. Canadian Acoustics [Internet]. 1991 Jul. 1 [cited 2025 Feb. 15];19(3):3-15. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/638

Issue

Vol. 19 No. 3 (1991)

Section

Technical Articles

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.