Article Dans Une Revue Journal of Sound and Vibration Année : 2025

Experimental estimation of the sound power radiated from panels excited by a turbulent boundary layer

Résumé

This study addresses the experimental estimation of the radiated sound power from a panel excited by a homogeneous and fully developed turbulent boundary layer. Two approaches are investigated, one based on vibration measurements and the other on near-field sound pressure measurements. The first method estimates the radiated sound power from the vibration cross-spectral density matrix measured for a regular grid on the panel and the theoretical radiation resistance matrix. To reduce the number of sensors on the panel, a formulation is proposed to estimate the vibration cross-spectral density between two points not measured simultaneously, using additional reference sensors. The second method estimates the radiated sound power from measuring the near-field sound pressure. The far-field sound pressure is extrapolated from the near-field measurements using the Planar Nearfield Acoustical Holography principle. The radiated sound power is then deduced from the far-field pressure. The two methods are first studied numerically to verify their validity and to highlight their limits before being evaluated experimentally in an anechoic wind tunnel.

Fichier principal
Vignette du fichier
Plouseau-Guédé et al. (2025) - Experimental estimation of the sound power radiated from panels excited by a turbulent boundary layer.pdf (3.1 Mo) Télécharger le fichier
Origine Publication financée par une institution
Licence

Dates et versions

hal-05216503 , version 1 (20-08-2025)

Licence

Identifiants

Citer

Xavier Plouseau-Guédé, Alain Berry, Laurent Maxit, Valentin Meyer, Anaïs Mougey, et al.. Experimental estimation of the sound power radiated from panels excited by a turbulent boundary layer. Journal of Sound and Vibration, 2025, 619, pp.119363. ⟨10.1016/j.jsv.2025.119363⟩. ⟨hal-05216503⟩
79 Consultations
153 Téléchargements

Altmetric

Partager

  • More