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Acoustic signal associated with the bursting of a soap film which initially closes an overpressurized cavity

Experiment and theory
Physics of Fluids

Abstract.

We report an experimental study of the sound produced by the bursting of a thin liquid film, which initially closes an overpressurized cylindrical cavity. There is a need for a deep understanding of the phenomenon, which can be very useful in numerous practical cases. For instance, in the nature, the volcanologists observe the bursting of large, elongated, gas-bubbles at the surface of lava lakes and record the associated sound emission. One can wonder which pieces of information they can get from such acoustic measurements. For a didactic purpose, we provide also the reader with all the theoretical background necessary for the understanding of the physical processes that govern the various characteristics of the acoustic signals: the cavity geometry governs the frequency; the viscous dissipation and the radiation are responsible for the damping; the acoustic energy informs about the characteristic time associated with the film-rupture more than about the energy initially loaded in the cavity.

PACS.

68.15.+e Liquid thin films 43.20.Mv Waveguides, wave propagation in tubes and ducts 43.20.Ks Standing waves, resonance, normal modes 91.40.Yt Remote sensing of volcanoes  

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  1. 1.Laboratorio de Física No Lineal and Center for Advanced Interdisciplinary Research in Materials (CIMAT), Departamento de FísicaUniversidad de Santiago de Chile (USACH)SantiagoChile
  2. 2.Laboratoire de PhysiqueLyon Cedex 07France

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