Suppression and emergence of granular segregation under cyclic shear

Matt Harrington, Joost H. Weijs, Wolfgang Losert

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28 Citations (Scopus)
99 Downloads (Pure)


While convective flows are implicated in many granular segregation processes, the associated particle-scale rearrangements are not well understood. A three-dimensional bidisperse mixture segregates under steady shear, but the cyclically driven system either remains mixed or segregates slowly. Individual grain motion shows no signs of particle-scale segregation dynamics that precede bulk segregation. Instead, we find that the transition from nonsegregating to segregating flow is accompanied by significantly less reversible particle trajectories and the emergence of a convective flow field.
Original languageEnglish
Article number078001
Number of pages5
JournalPhysical review letters
Issue number7
Publication statusPublished - 2013


  • IR-89983
  • METIS-297996


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