Record Details


Field	Value

Title	Solid-fluid transition in a granular shear flow

Creator	ORPE, AV KHAKHAR, DV

Subject	surface flows model avalanches heap dynamics picture media drum

Description	The rheology of a granular shear flow is studied in a quasi-2D rotating cylinder. Measurements are carried out near the midpoint along the length of the surface flowing layer where the flow is steady and nonaccelerating. Streakline photography and image analysis are used to obtain particle velocities and positions. Different particle sizes and rotational speeds are considered. We find a sharp transition in the apparent viscosity (eta) variation with rms velocity (u). Below the transition depth we find that the rms velocity decreases with depth and etaproportional tou(-1.5) for all the different cases studied. The material approaches an amorphous solidlike state deep in the layer. The velocity distribution is Maxwellian above the transition point and a Poisson velocity distribution is obtained deep in the layer. The results indicate a sharp transition from a fluid to a fluid+solid state with decreasing rms velocity.

Publisher	AMERICAN PHYSICAL SOC

Date	2011-07-17T20:21:50Z 2011-12-26T12:50:29Z 2011-12-27T05:35:29Z 2011-07-17T20:21:50Z 2011-12-26T12:50:29Z 2011-12-27T05:35:29Z 2004

Type	Article

Identifier	PHYSICAL REVIEW LETTERS, 93(6), - 0031-9007 http://dx.doi.org/10.1103/PhysRevLett.93.068001 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4835 http://hdl.handle.net/10054/4835

Language	en

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