In this paper, we overview examples of chaos in granular flows. We begin by reviewing several remarkable behaviors that have intrigued researchers over the past few decades, and we then focus on three areas in which chaos plays an intrinsic role in granular behavior. First, we discuss pattern formation in vibrated beds, which we show is a direct result of chaotic scattering combined with dynamical dissipation. Next, we consider stick-slip motion, which involves chaotic scattering on the micro-scale, and which results in complex and as yet unexplained peculiarities on the macro-scale. Finally, we examine granular mixing, which we show combines micro-scale chaotic scattering and macro-scale stick-slip motion into behaviors that are well described by dynamical systems tools, such as iterative mappings.
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September 2015
Research Article|
September 30 2015
Granular chaos and mixing: Whirled in a grain of sand
Troy Shinbrot
Troy Shinbrot
a)
Department of Biomedical Engineering,
Rutgers University
, Piscataway, New Jersey 08854, USA
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Chaos 25, 097622 (2015)
Article history
Received:
January 02 2015
Accepted:
April 22 2015
Citation
Troy Shinbrot; Granular chaos and mixing: Whirled in a grain of sand. Chaos 1 September 2015; 25 (9): 097622. https://doi.org/10.1063/1.4931434
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