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Microstreaming generated by two acoustically induced gas bubbles

Published online by Cambridge University Press:  04 May 2016

Alexander A. Doinikov  and
Ayache Bouakaz
Alexander A. Doinikov*
Affiliation:
INSERM U930, Université François Rabelais, 10 Boulevard Tonnellé, BP 3223, 37032 Tours CEDEX 1, France
Ayache Bouakaz
Affiliation:
INSERM U930, Université François Rabelais, 10 Boulevard Tonnellé, BP 3223, 37032 Tours CEDEX 1, France
*
†Email address for correspondence: [email protected]
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Abstract

A theory is developed that describes microstreaming generated by two interacting gas bubbles in an acoustic field. The theory is used in numerical simulations to compare the characteristics of acoustic microstreaming at different frequencies, separation distances between the bubbles and bubble sizes. It is shown that the interaction of the bubbles leads to a considerable increase in the intensity of the velocity and stress fields of acoustic microstreaming if the bubbles are driven near the resonance frequencies that they have in the presence of each other. Patterns of streamlines for different situations are presented.

JFM classification

Drops and Bubbles: Bubble dynamics Drops and Bubbles: Cavitation Drops and Bubbles: Drops and Bubbles
Type
Papers
Information
Journal of Fluid Mechanics , Volume 796 , 10 June 2016 , pp. 318 - 339
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Copyright
© 2016 Cambridge University Press 

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