Using a partial-wave method for sound–mean-flow scattering problems

Abstract : We present a semianalytical method, based on a partial-wave expansion and valid in the short wavelength limit for small Mach number flows, to analyze sound–vortical-flow interactions. It is more powerful than ray-tracing methods because it gives both amplitude and phase of the sound wave, and because it is less restrictive on the smallness of the wavelength. In contrast with the Born approximation approach, this method allows the computation of the sound field in the whole interaction domain including the near field , and preserves energy conservation. Vortical flows with finite circulation are amenable to our analysis, which gives a satisfactory description of wave front dislocation by vorticity, in good agreement with direct numerical simulations. We extend previous versions of this method to the case of smooth vorticity profiles which are observed in aeroacoustics experiments.
Type de document :
Article dans une revue
Physical Review E , American Physical Society (APS), 2003
Liste complète des métadonnées

Littérature citée [4 références]  Voir  Masquer  Télécharger

https://hal-univ-diderot.archives-ouvertes.fr/hal-01406762
Contributeur : Christophe Coste <>
Soumis le : jeudi 1 décembre 2016 - 15:13:17
Dernière modification le : mardi 24 avril 2018 - 17:20:04
Document(s) archivé(s) le : mardi 21 mars 2017 - 09:38:10

Fichier

2003_PRE_RBCC.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

  • HAL Id : hal-01406762, version 1

Collections

Citation

Remy Berthet, Christophe Coste. Using a partial-wave method for sound–mean-flow scattering problems. Physical Review E , American Physical Society (APS), 2003. 〈hal-01406762〉

Partager

Métriques

Consultations de la notice

182

Téléchargements de fichiers

87