The non-linear response of bubble clouds to pressure excitations

In this article we numerically investigate the non-linear response of a bubble cloud against a periodic pressure excitation. By exciting a planar bubble curtain with an external acoustic pulse of given amplitude and frequency, we characterize the global dynamic response of the system using phase dia...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 656; no. 1; pp. 12123 - 12126
Main Authors Fuster, D, Bergamasco, L
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 03.12.2015
IOP Science
Subjects
Amplitudes
Clouds
Dynamic response
Excitation
External pressure
Mass transfer
Nonlinear response
Phase diagrams
Physics
Pressure pulses
Void fraction
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Summary:In this article we numerically investigate the non-linear response of a bubble cloud against a periodic pressure excitation. By exciting a planar bubble curtain with an external acoustic pulse of given amplitude and frequency, we characterize the global dynamic response of the system using phase diagrams representing the void fraction against the excitation pressure. Even in the absence of mass transfer, the void fraction around which the system oscillates increases when increasing the excitation amplitude. We show how the maximum pressures reached during the collapse of bubbles are higher in polydisperse bubble clouds than in monodisperse clouds for strong pressure pulses.
ISSN:1742-6588
1742-6596
1742-6596
1742-6588
DOI:10.1088/1742-6596/656/1/012123