Spiraling bubbles: How acoustic and hydrodynamic forces compete

Rensen, Judith and Bosman, Dennis and Magnaudet, Jacques and Ohl, Claus-Dieter and Prosperetti, Andrea and Togel, Rudiger and Versluis, Michel and Lohse, Detlef (2001) Spiraling bubbles: How acoustic and hydrodynamic forces compete. Physical Review Letters, 86 (21). pp. 4819-4822. ISSN 0031-9007

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Abstract:	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.
Item Type:	Article
Copyright:	© 2001 The American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Physics of Fluids (POF)
Link to this item:	http://purl.utwente.nl/publications/36436
Official URL:	http://dx.doi.org/10.1103/PhysRevLett.86.4819
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Metis ID: 202015