Experimental evidence of the kinematic Cosserat effect in dense granular flows

Ananda, KS and Patra, Jaysree and Nott, Prabhu R (2009) Experimental evidence of the kinematic Cosserat effect in dense granular flows. In: Physics of fluids, 21 (5).

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Abstract

To capture shear localization in the flow of dense granular materials in a continuum description, it has earlier been proposed that granular materials be treated as Cosserat, or micropolar, continua. Here, we provide experimental verification of the kinematic Cosserat effect, or the deviation of the particle spin from the material spin induced by the velocity gradient. Contrary to earlier belief, we find this effect to be sizable even outside the shear layers. Remarkably, the particles and material elements spin in opposite directions in flow through a hopper.

Item Type:	Journal Article
Publication:	Physics of fluids
Publisher:	American institute physics
Additional Information:	Copyright for this article belongs to American institute physics.
Keywords:	granular flow.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	19 Jul 2009 05:24
Last Modified:	19 Sep 2010 05:35
URI:	http://eprints.iisc.ac.in/id/eprint/20982

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