Spiraling bubbles: How acoustic and hydrodynamic forces compete

Judith Rensen, Dennis Bosman, Jacques Magnaudet, Claus-Dieter Ohl, Andrea Prosperetti, Rüdiger Tögel, Michel Versluis, Detlef Lohse

Research output: Contribution to journalArticleAcademicpeer-review

30 Citations (Scopus)
122 Downloads (Pure)


Experiments to study the effect of acoustic forces on individual bubbles in shear flows have been carried out. In the system that we have used, the competition between acoustic and fluid dynamical forces results in a spiraling bubble trajectory. This dynamics is modeled by expressing the balance between Bjerknes and hydrodynamic forces in terms of an ordinary differential equation model, to which a separation of time scales is applied. The success of this model shows that the simple force-balance approach is still meaningful when bubbles are subjected to sound fields.
Original languageEnglish
Pages (from-to)4819-4822
Number of pages4
JournalPhysical review letters
Issue number21
Publication statusPublished - 21 May 2001


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