A mixed analytical-numerical model for the S-matrix computation of bidimensional lined ducts with HQ tubes - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2010

A mixed analytical-numerical model for the S-matrix computation of bidimensional lined ducts with HQ tubes

Romain Marechal
  • Fonction : Auteur correspondant
  • PersonId : 881887

Connectez-vous pour contacter l'auteur
Emmanuel Perrey-Debain
Jean-Michel Ville
  • Fonction : Auteur
  • PersonId : 881888
Benoît Nennig

Résumé

The Herschel-Quincke (HQ) tubes, consisting in putting tubes in derivation along a main acoustic wave guide, are used as passive devices to control fan noise. In order to assess the efficiency of this system, a new mixed analytical-numerical model is presented. The technique relies on combining Finite Element techniques to accurately describe the HQ tube with an integral representation for the acoustic pressure in the main duct. The presence of acoustic liners on the walls of the duct is taken into account via an appropriate modal decomposition of the Green's function. We show that our algorithm allows a very fast and accurate computation of the scattering matrix of such a system with a numerical complexity that grows very mildly with the frequency. Results show that ‘nearly' optimal configurations can be quickly identified with a very small computational expense.
Fichier principal
Vignette du fichier
000037.pdf (143.74 Ko) Télécharger le fichier
Origine : Accord explicite pour ce dépôt
Loading...

Dates et versions

hal-00534628 , version 1 (16-11-2010)

Identifiants

  • HAL Id : hal-00534628 , version 1

Citer

Romain Marechal, Emmanuel Perrey-Debain, Jean-Michel Ville, Benoît Nennig. A mixed analytical-numerical model for the S-matrix computation of bidimensional lined ducts with HQ tubes. 10ème Congrès Français d'Acoustique, Apr 2010, Lyon, France. ⟨hal-00534628⟩
165 Consultations
149 Téléchargements

Partager

Gmail Facebook X LinkedIn More