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

Auteurs-es

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

Mots-clés :

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

Résumé

Cette communication porte sur la mise au point d’un nouveau modèle à éléments finis d’analyse de la propagation du son dans des éléments d’un réseau de conduites. Les premiers essais du modèle ont consisté à prévoir les fréquences de résonance acoustique de cavités à parois dures. Le modèle a ensuite servi à prévoir les caractéristiques de propagation du son dans des coudes et des raccords de conduites, y compris les caractéristiques de la propagation de mode plus élevé dans des conduites droites raccordées, et l’effet convectif d’un écoulement d’air à faible nombre de Mach.

Fichiers supplémentaires

Publié-e

1991-07-01

Comment citer

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

Numéro

Vol. 19 No. 3 (1991)

Rubrique

Articles techniques

Licence

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