Three-dimensional shear in granular flow

Xiang Cheng, Jeremy B. Lechman, Antonio Fernandez-Barbero, Gary S. Grest, Heinrich M. Jaeger, Greg S. Karczmar, Matthias E. Möbius, Sidney R. Nagel

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84 Scopus citations


The evolution of granular shear flow is investigated as a function of height in a split-bottom Couette cell. Using particle tracking, magnetic-resonance imaging, and large-scale simulations, we find a transition in the nature of the shear as a characteristic height H* is exceeded. Below H* there is a central stationary core; above H* we observe the onset of additional axial shear associated with torsional failure. Radial and axial shear profiles are qualitatively different: the radial extent is wide and increases with height, while the axial width remains narrow and fixed.

Original languageEnglish (US)
Article number038001
JournalPhysical review letters
Issue number3
StatePublished - Jan 27 2006


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