Reference : Foaming dynamics in Hele-Shaw cells
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Foaming dynamics in Hele-Shaw cells
Caps, Hervé mailto [Université de Liège - ULg > Département de physique > Optofluidique >]
Vandewalle, Nicolas mailto [Université de Liège - ULg > Département de physique > Physique statistique >]
Broze, Guy [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
Physical Review E
American Physical Soc
6, Pt 2
Yes (verified by ORBi)
College Pk
[en] We have studied foaming dynamics in Hele-Shaw cells partially filled with a soap and water mixture. A series of upside-down flips produces an intermittent wetting of the cell and leads to foam formation. As a function of the number of flips, an increasing number of bubbles composes the foam, until saturation is observed. Statistical analysis shows that the bubble size follows a Gamma distribution. Contrary to common belief, this foaming dynamics by "shaking" creates homogeneous foam, even though the system may pass through transient heterogeneous configurations. A mechanistic interpretation is proposed and included into a theoretical model.
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