title: Effect of direct bubble-bubble interactions on linear-wave propagation in bubbly liquids.
abstract: We study the influence of bubble-bubble interactions on the propagation of linear acoustic waves in bubbly liquids. Using the full model proposed by Fuster and Colonius [J. Fluid Mech. 688, 253 (2011)], numerical simulations reveal that direct bubble-bubble interactions have an appreciable effect for frequencies above the natural resonance frequency of the average size bubble. Based on the new results, a modification of the classical wave propagation theory is proposed. The results obtained are in good agreement with previously reported experimental data where the classical linear theory systematically overpredicts the effective attenuation and phase velocity.
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France.
authors.forename: D
authors.initials: D
authors.lastname: Fuster
authors.affiliation: Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France.
authors.forename: J M
authors.initials: JM
authors.lastname: Conoir
authors.affiliation: Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA.
authors.forename: T
authors.initials: T
authors.lastname: Colonius