Partager

Document IIF

Etude expérimentale et numérique sur le bruit généré par un système de conditionnement d'air extérieur muni de plusieurs grilles.

Experimental and numerical study on aerodynamic noise of outdoor unit of room air conditioner with different grilles.

Auteurs : TIAN J., OUYANG H., WU Y.

Type d'article : Article, Article de la RIF

Résumé

The aerodynamic and aeroacoustic performances of outdoor unit with two different types of grille have been investigated in present study. Experimental results indicate that the grille sharp will affect the flow rate and increase broadband noise level of outdoor unit. Based on noise generation mechanism and CFD simulation, vortex shedding noise model and inlet turbulence noise model are adopted to predict the broadband noise level of outdoor unit. When vortex shedding noise is concerned, the wake parameters should be calculated at 3 mm downstream of grille to achieve good accuracy. Inlet turbulence noise is generated from the interaction between blade wake and the grille, and plays less important role in present outdoor unit configuration. In comparison with experimental results, it is shown that the broadband noise prediction method could provide reasonable accuracy and the error between prediction and experiment is less than 1 dBA.

Documents disponibles

Format PDF

Pages : 1112-1122

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental and numerical study on aerodynamic noise of outdoor unit of room air conditioner with different grilles.
  • Identifiant de la fiche : 2009-1734
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 5
  • Date d'édition : 08/2009

Liens


Voir d'autres articles du même numéro (38)
Voir la source

Indexation