Dynamics of two interacting acoustic bubbles at short separation distances

Autor:	Gabriel Regnault, Alexander A. Doinikov, Cyril Mauger, Philippe Blanc-Benon, Claude Inserra
Rok vydání:	2023
Předmět:	Fluid Flow and Transfer Processes Mechanics of Materials Mechanical Engineering Computational Mechanics Condensed Matter Physics
Zdroj:	Physics of Fluids. 35:037116
ISSN:	1089-7666 1070-6631
DOI:	10.1063/5.0135370
Popis:	We investigate experimentally the attraction between two closely spaced, oscillating microbubbles. Above a certain value of the applied acoustic field, the bubbles jump to a new equilibrium location, where they are separated by a thin fluid layer whose the thickness is much smaller than the bubble radii. We demonstrate that this new equilibrium is caused by the sign reversal of the radiation interaction force acting between the two bubbles, attributed to the multiple rescattering effects of the waves emitted by the bubbles. Theoretical investigation reveals that a new stable equilibrium appears at short distances, resulting in a quasi-contacting bubble pair.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::738618240048d1620c4cf03d503f0680 https://doi.org/10.1063/5.0135370 Zobrazit plný text záznamu