Non-linear bubbly Helmholtz resonator - Archive ouverte HAL
Article Dans Une Revue Applied Acoustics Année : 2022

Non-linear bubbly Helmholtz resonator

Résumé

Microbubble clouds greatly affect the acoustic behaviour of systems such as liquid-filled Helmholtz resonators. Gas microbubbles change the resonator’s behaviour from quasi-linear to mostly non-linear, together with the appearance of hysteretic phenomena and desymmetrisation of the temporal response or a softening effect with a drop in the resonance frequencies with increasing excitation amplitudes. The aim of this study is to model the non-linear behaviour of a diphasic Helmholtz resonator filled with water containing air microbubbles. The microbubble cloud is therefore modelled with a “damped-mass-spring” second-order equation. The impact of the two phases is accounted for by considering both an equivalent stiffness and an equivalent damping value. The model is then compared to experimental data, which showed its ability to reproduce both linear and non-linear behaviour.
Fichier principal
Vignette du fichier
S0003682X21005867.pdf (1.23 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03470010 , version 1 (05-01-2024)

Licence

Identifiants

Citer

Matthieu Malléjac, Cédric Payan, Lilian d'Hondt, Serge Mensah, Aroune Duclos, et al.. Non-linear bubbly Helmholtz resonator. Applied Acoustics, 2022, 187, pp.108492. ⟨10.1016/j.apacoust.2021.108492⟩. ⟨hal-03470010⟩
78 Consultations
8 Téléchargements

Altmetric

Partager

More