Flow generated noise in ventilation systems

Résumé et principaux résultats

When an obstruction is present in a ventilation ductwork, the noise level may be considerably higher than the level measured without the obstruction. This excess noise is due to the interaction of the flow with the element and it is called flow-generated noise in the element. Numerous examples may be found in the literature where this mechanism occurs, such as flow noise generated in duct elbows, dampers, grilles, louvers, duct discontinuities.
This paper presents a non-exhaustive review of methods that have been implemented to predict flow generated noise levels in ventilation components.
Texte du document AIVC CR 02.

Commissions

Ventilation des bâtiments résidentiels et tertiaires

Thème

Ventilateurs

Mots-clés

Acoustique, Mécanique des fluides

Auteurs

GUEDEL Alain