When an air bubble reaches a free surface, after a short transient, it
rests on the surface for some time and eventually it bursts. The
bursting occurs when the fluid film drains and breaks. This process has
been vastly studied. For the case of water-alcohol mixtures the draining
film is also influenced by Marangoni-type flow, leading to long bursting
times and interesting differences in the bursting process. These images
show some of these characteristic features. This investigation is
motivated by the use of such bubbles in the artisanal process to make
mezcal, a traditional agave spirit from Mexico. For more details please
go to talk H21.00006 of the DFD-APS-2016 meeting.
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