Proximity resonances of water-entrained air bubbles near acoustically reflecting boundaries

Simple item page
dc.contributor.authorvan 't Wout, Elwin
dc.contributor.authorFeuillade, Christopher
dc.date.accessioned2025-01-20T23:51:09Z
dc.date.available2025-01-20T23:51:09Z
dc.date.issued2021
dc.description.abstractThe acoustic resonances of radiatively damped air bubbles in water near reflecting boundaries are investigated by representing the bubble and its image by two bubbles in a full space, ensonified by two incident fields. Results obtained using an analytic monopole theory are compared with those of a coupled spherical harmonic technique and a boundary element method. Near a rigid boundary, the resonance frequency is reduced, and the response characteristics are determined by the predominant monopolar character of the individual bubble motion, with small changes in peak amplitude and Q. Near a sound-soft boundary, a higher frequency proximity resonance is observed. The monopole field is cancelled out, and the response is determined by higher-order scattering modes, giving very high values of Q. While the individual bubble scattering level increases significantly, the overall scattering is less than for two uncoupled bubbles. For bubble separations of 8-28 radii, all three approaches predict essentially identical results for both boundary types. For bubble separations less than one radius, the monopole theory, which does not include higher-order scattering modes, diverges from the boundary element and coupled spherical harmonic methods, whose high-accuracy determinations of resonance frequencies and amplitudes agree to within 0.1%.
dc.fuente.origenWOS
dc.identifier.doi10.1121/10.0003921
dc.identifier.eissn1520-8524
dc.identifier.issn0001-4966
dc.identifier.urihttps://doi.org/10.1121/10.0003921
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94777
dc.identifier.wosidWOS:000638094100004
dc.issue.numero4
dc.language.isoen
dc.pagina.final2491
dc.pagina.inicio2477
dc.revistaJournal of the acoustical society of america
dc.rightsacceso restringido
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleProximity resonances of water-entrained air bubbles near acoustically reflecting boundaries
dc.typeartículo
dc.volumen149
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas