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Experimental evidence for a description of granular segregation in terms of the effective temperature

DSpace at IIT Bombay

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Title Experimental evidence for a description of granular segregation in terms of the effective temperature
 
Creator SARKAR, S
KHAKHAR, DV
 
Subject particle-size segregation
flow
mixtures
rheology
dynamics
solids
avalanches
systems
smooth
 
Description Granular segregation, spontaneous demixing of components in. owing mixtures, is a phenomenon of practical importance and occurs in a number of natural systems. We present a model to describe granular segregation due to density differences in a dense granular flow. Such flows are a prototype of "jammed" systems for which a new thermodynamics has been proposed arising from analysis of glassy systems and packed powders. In the context of this new framework, we show that granular segregation is determined by the effective temperature defined by the fluctuation-dissipation relation. The description has no fitted parameters and is validated by experiments. The work shows the utility of the effective temperature for the analysis of transport in granular flows and indicates the promise of the new thermodynamics for the description of practical systems. Copyright (c) EPLA, 2008.
 
Publisher EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
 
Date 2011-07-29T18:54:16Z
2011-12-26T12:52:34Z
2011-12-27T05:38:51Z
2011-07-29T18:54:16Z
2011-12-26T12:52:34Z
2011-12-27T05:38:51Z
2008
 
Type Article
 
Identifier EPL, 83(5), -
0295-5075
http://dx.doi.org/10.1209/0295-5075/83/54004
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7798
http://hdl.handle.net/10054/7798
 
Language en