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Accueil > Publications > Archives 2004-2010 > 2005

Droplet traffic at a simple junction at low capillary numbers

W. Engl, M. Roche, A. Colin, P. Panizza, A. Ajdari — Phys. Rev. Lett. 95 (2005) 208304

publié le , mis à jour le

When a ?train ? of confined droplets flowing through a channel reaches a junction : the droplets
either alternately distribute between the different outlets or all collect into the shortest one. We
here show that this behavior is due to the hydrodynamic feed-back of drops in the different outlets
on the selection process occurring at the junction. A ?mean field ? model, yielding semi quantitative
results, offers a first guide to predict droplet traffic in branched networks.

- Publié dans Physical Review Letters