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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7798

Title: Experimental evidence for a description of granular segregation in terms of the effective temperature
Authors: SARKAR, S
KHAKHAR, DV
Keywords: particle-size segregation
flow
mixtures
rheology
dynamics
solids
avalanches
systems
smooth
Issue Date: 2008
Publisher: EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
Citation: EPL, 83(5), -
Abstract: 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.
URI: 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
ISSN: 0295-5075
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