Layering instability in a confined suspension flow

M. Zurita-Gotor, J. Bławzdziewicz, E. Wajnryb

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


We show that swapping (reversing) trajectories in confined suspension flows prevent collisions between particles approaching each other in adjacent streamlines. Here we demonstrate that by inducing layering this hydrodynamic mechanism changes the microstructure of suspensions in a confined Couette flow. Layers occur either in the near-wall regions or span the whole channel width, depending on the strength of the swapping-trajectory effect. While our theory focuses on dilute suspensions, we postulate that this new hydrodynamic mechanism controls the formation of a layered microstructure in a wide range of densities.

Original languageEnglish
Article number068301
JournalPhysical Review Letters
Issue number6
StatePublished - Feb 10 2012


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