Segregation of a granular binary mixture in a rotating drum: A critical phenomenon

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39104

Title:	Segregation of a granular binary mixture in a rotating drum: A critical phenomenon
Authors:	Jia,LC;Lai,PY;Chan,CK
Contributors:	物理研究所
Keywords:	REVERSIBLE AXIAL SEGREGATION;SELF-ORGANIZED CRITICALITY;MEDIA
Date:	1998
Issue Date:	2010-07-08 14:05:01 (UTC+8)
Publisher:	中央大學
Abstract:	The segregation phenomena of a 1:1 mixture of grain particles with different frictional properties in a rotating drum are studied by simulations. The surface flow is modeled by extending the rules from sandpile models while the rotation is modeled by a solid rotation. Radial segregation will occur only if the rotational transport rate omega is less than some critical value omega(c). Our results show that such a segregation can be described by a non-equilibrium critical phase transition in the steady state with the particle transport rate playing the role of the temperature. Employing finite-size scaling analysis similar to standard critical phenomena, critical exponents for the order parameter and its fluctuation are also obtained numerically.
Relation:	CHINESE JOURNAL OF PHYSICS
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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