Sonic Boom Excited Sediment Waves: A Model Study

Auteurs-es

  • H.K. Cheng Dept. Aerospace Engineering, Univ. Southern California, United States
  • J.A. Kunc Dept. Aerospace Engineering, Univ. Southern California, United States
  • J.R. Edwards Acquisition Civil Engineering, Space and Missile System Center, Los Angeles AFB, United States

Mots-clés :

Acoustic fields, Acoustic wave propagation, Arrays, Computational methods, Computer simulation, Elastic moduli, Hydrophones, Numerical analysis, Problem solving, Resonance, Sediments, Underwater acoustics, Waveform analysis, Sediment waves, Wave fields

Résumé

L'excitation d'ondes sédimentaires par le boom sonique est étudiée avec un modèle de champ d'ondes comprenant de l'eau de profondeur finie et un milieu élastique représentant le sédiment. Ce dernier est supposé uniforme, isotrope et d'étendu semi-infini. Les modes libres s'avèrent dispersifs, résultants une gamme finie de vitesse de résonance non atténuée. L'étude identifie la différence dans le comportement du champ lointain entre le mode de résonance excité et l'onde de groupe des modes libres: si l'onde sous-marine du mode de résonance se propage à la même vitesse que le boom sonique dans l'air et reste sous forme de train d'ondes monochromatiques, le groupe d'ondes des modes libres sont dispersés dans un paquet d'ondes et atténués avec l'augmentation de la distance et le temps. Des exemples d'un modèle de sédiment de sable fin avec des ondes de boomsonique à deux nombres de Mach de vol sont discutés. Des différences et les similitudes entre l'analyse actuelle et les travaux de Deshamais et de colporteur sont aussi reportés.

Fichiers supplémentaires

Publié-e

2003-12-01

Comment citer

1.
Cheng H, Kunc J, Edwards J. Sonic Boom Excited Sediment Waves: A Model Study. Canadian Acoustics [Internet]. 1 déc. 2003 [cité 19 févr. 2025];31(4):5-16. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1572

Numéro

Vol. 31 No. 4 (2003)

Rubrique

Articles techniques

Licence

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.