Titre :

Bubble splitting in oscillatory flows on ground and in reduced gravity

Auteur(s) :

Yoshikawa, Harunori [Auteur correspondant]
Physique et mécanique des milieux hétérogènes [PMMH]
Zoueshtiagh, Farzam [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Caps, Hervé [Auteur]
Kurowski, Pascal [Auteur]
Physique et mécanique des milieux hétérogènes [PMMH]
Petitjeans, Philippe [Auteur]
Physique et mécanique des milieux hétérogènes [PMMH]

Titre de la revue :

European Physical Journal E: Soft matter and biological physics

Pagination :

191-199

Éditeur :

EDP Sciences: EPJ

Date de publication :

2010

ISSN :

1292-8941

Mot(s)-clé(s) en anglais :

Two-phase flow
Unsteady flow

Discipline(s) HAL :

Physique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]

Résumé en anglais : [en]

The stability of centimeter scale air bubbles is studied in quiescent suspending liquid under imposed oscillatory acceleration field. Experiments were performed in reduced and normal gravity environments. A strong acceleration ...
Lire la suite >The stability of centimeter scale air bubbles is studied in quiescent suspending liquid under imposed oscillatory acceleration field. Experiments were performed in reduced and normal gravity environments. A strong acceleration resulted in an instability leading to the breakups of the bubbles in both gravity environments. The breakup onset was investigated and found to be characterized by a critical acceleration acr. The influence of the liquid viscosity and the gravitational environment was studied. Empirical correlations for the onset are presented and discussed with the intention to reveal splitting mechanism. The inertial mechanism often deemed to cause the breakup of drops subjected to a rapid gas stream is shown to give explanations consistent with the experiments. A breakup criterion for both gravitational environments is proposed through discussions from an energetic point of view.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL