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Growth by rectified diffusion of strongly acoustically-forced gas bubbles in nearly saturated liquids

Louisnard, Olivier and Gomez, Francisco Growth by rectified diffusion of strongly acoustically-forced gas bubbles in nearly saturated liquids. (2003) Physical Review E, 67 (3). 036610. ISSN 1539-3755

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Official URL: http://dx.doi.org/10.1103/PhysRevE.67.036610


The growth or dissolution of small gas bubbles (R0 < 15 μm) by rectified diffusion in nearly satu- rated liquids, subject to low frequencies (20 kHz < f < 100 kHz), high driving acoustic fields (1 bar < p < 5 bar) is investigated theoretically. It is shown that, in such conditions, the rectified diffusion threshold radius merges with the Blake threshold radius, which means that a growing bubble is also an inertially-oscillating bubble. On the assumption that such a bubble keeps its integrity up to the shape instability threshold predicted by single-bubble theory, a numerical estimation, and a fully analytical approximation of its growth-rate are derived. From one hand, the merging of the two thresholds raises the problem of the construction and self-sustainment of acoustic cavitation fields. From the other hand, the lifetime of the growing inertial bubbles calculated within the present the- ory is found to be much shorter than the time necessary to rectify argon. This allows an alternative interpretation of the absence of single-bubble sonoluminescence (SBSL) emission in multi-bubble fields, without resorting to the conventional picture of shape instabilities caused by the presence of other bubbles.

Item Type:Article
Additional Information:Thanks to the American Physical Society. The definitive version is available at http://journals.aps.org/pre/abstract/10.1103/PhysRevE.67.036610
HAL Id:hal-01343141
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Other partners > Universidad de Santiago de Chile - USACH (CHILE)
Laboratory name:
Deposited On:07 Jul 2016 13:46

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