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Soft Matter and Biological Physics


Eur. Phys. J. E 4, 5-10

Acoustic coupling between two air bubbles in water

P.-Y. Hsiao1, M. Devaud2 and J.-C. Bacri2.

1  Laboratoire de Physique Théorique de la Matière Condensée, Université Paris 7-Denis Diderot, case 7020, 2 place Jussieu, 75251 Paris, Cedex 05, France
2  Laboratoire des Milieux Désordonnés et Hétérogènes, Université Pierre et Marie Curie-Paris 6, case 78, 4 place Jussieu, 75252 Paris, Cedex 05, France

hsiao@ccr.jussieu.fr
devaud@ccr.jussieu.fr
jcbac@ccr.jussieu.fr

(Received 31 March 2000 and Received in final form 4 July 2000)

Abstract
The acoustic coupling between two air bubbles immersed in water is clearly demonstrated. The system is acoustically forced, and its response is detected. The experimental results confirm that both theoretically predicted eigenmodes, respectively symmetrical and antisymmetrical, do exist. Their frequencies, measured as a function of the bubbles spacing, follow theoretical estimations within a $10\%$ accuracy.

PACS
43.20.+g - General linear acoustics.
43.30.+m - Underwater sound.
43.25.+y - Nonlinear acoustics.


© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2001