Orbital trajectory of an acoustic bubble in a cylindrical resonator.

Phys Rev E Stat Nonlin Soft Matter Phys

INSERM, U1032, LabTAU, Université Claude Bernard Lyon 1, 151 Cours Albert Thomas, 69003, Lyon, France.

Published: September 2013

Acoustic cavitation-induced microbubbles in a cylindrical resonator filled with water tend to concentrate into ring patterns due to the cylindrical geometry of the system. The shape of these ring patterns is directly linked to the Bjerknes force distribution in the resonator. Experimental observations showed that cavitation bubbles located in the vicinity of this ring may exhibit a spiraling behavior around the pressure nodal line. This spiraling phenomenon is numerically studied, the conditions for which a single cavitation bubble follows an orbital trajectory are established, and the influences of the acoustic pressure amplitude and the initial bubble radius are investigated.

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http://dx.doi.org/10.1103/PhysRevE.88.033006DOI Listing

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