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Article Dans Une Revue Physical Review Letters Année : 2022

Acoustic Resonance Frequencies of Underwater Toroidal Bubbles

Résumé

Underwater bubbles display an acoustic resonance frequency close to spherical ones. In order to obtain a resonance significantly deviating from the spherical case, we stabilize bubbles in toroidal frames, resulting in bubbles which can be slender while still compact. For thin tori the resonance frequency increases greatly. Between a pair of bubble rings, we can achieve a flat acoustic pressure field for a critical distance between rings, a condition reminiscent of Helmholtz coils in magnetostatics. This opens the possibility to shape the acoustic field using long tunnels of rings.
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Dates et versions

hal-03795819 , version 1 (04-10-2022)

Identifiants

Citer

M Alloul, B Dollet, O Stephan, E Bossy, C Quilliet, et al.. Acoustic Resonance Frequencies of Underwater Toroidal Bubbles. Physical Review Letters, 2022, 129, ⟨10.1103/physrevlett.129.134501⟩. ⟨hal-03795819⟩

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