Active noise control with resonant flush-mounted piezoelectric cells in the presence of airflow: Wind tunnel experiments - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Vibration and Control Année : 2023

Active noise control with resonant flush-mounted piezoelectric cells in the presence of airflow: Wind tunnel experiments

Résumé

Methods and technologies to control the noise coming from turbulent flows impinging on outlet guide vanes in turbofan engines are tremendously needed nowadays to comply with new legislation on acoustic environment pollution. The following paper relies on preliminary research proposing a new experimental design of active noise control system to be further integrated into a jet engine outer guide vane prototype, consisting of multiple flush-mounted piezoelectric cells. Here, three active cells are placed on the bottom wall of a wind tunnel with upstream acoustic excitation generating grazing incident waves for different airflow velocities. Using a downstream microphone as an error sensor, the active system succeeds in improving the transmission loss of the sample by 2.5 dB at the target frequency (670 Hz) corresponding to the main piezo acoustic mode with airflow velocities up to 20 m.s −1 . These early experimental results confirm the ability of the concept to interact with the ambient acoustics without disturbing the airflow as in passive solutions using porous materials, for instance, leading the path to future experiments with realistic turbulence generating acoustic sources on the leading edge of the vane profile.
Fichier principal
Vignette du fichier
Rodriguez_JVC_preprint.pdf (5.19 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY - Paternité

Dates et versions

hal-04294068 , version 1 (25-01-2024)

Identifiants

Citer

Jonathan Rodriguez, Mouhamed Ezzine, Manuel Collet, Vincent Clair. Active noise control with resonant flush-mounted piezoelectric cells in the presence of airflow: Wind tunnel experiments. Journal of Vibration and Control, 2023, ⟨10.1177/10775463231210031⟩. ⟨hal-04294068⟩
43 Consultations
16 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More