Suppression and emergence of granular segregation under cyclic shear

Matt Harrington, Joost H. Weijs, Wolfgang Losert

Research output: Contribution to journalArticleAcademicpeer-review

21 Citations (Scopus)
49 Downloads (Pure)

Abstract

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
Volume111
Issue number7
DOIs
Publication statusPublished - 2013

Keywords

  • IR-89983
  • METIS-297996

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