000014537 001__ 14537
000014537 005__ 20161115100154.0
000014537 04107 $$aeng
000014537 046__ $$k2016-08-21
000014537 100__ $$aCantat, Isabelle
000014537 24500 $$aVelocity measurements in draining foam films (INVITED)

000014537 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014537 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014537 506__ $$arestricted
000014537 520__ $$2eng$$aFoam fihn drainage under gravity is a key ingredient controlling foams and bubbles stability. It has been shown by Mysels et al. in a pioneering work [1] that the drainage time is proportional to the fihn width, which was qualitatively explained at that time by the dominant role of the menisci at the fihn boundaries. This implies a complex flow within the draining fihn that we measure here for the first time using a tracer-free innovative velocimetry technique. Fluorescein is added in the fihn and a dark spot is photo-bleached. This spot then acts as a perfect passive tracer during fractions of second, before disappearing by diffusion or mixing. We evidence the lateral part of the film moving upward and the central part moving downward and we propose scaling laws for the associated velocities [ 2 ] .

000014537 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014537 653__ $$a

000014537 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014537 720__ $$aCantat, Isabelle
000014537 8560_ $$ffischerc@itam.cas.cz
000014537 8564_ $$s164884$$uhttps://invenio.itam.cas.cz/record/14537/files/TS.FM06-3.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 802, code TS.FM06-3.03
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000014537 962__ $$r13812
000014537 980__ $$aPAPER