Khakhar, D. V. ; Orpe, Ashish V. ; Hajra, S. K. (2003) Segregation of granular materials in rotating cylinders Physica A: Statistical Mechanics and Its Applications, 318 (1-2). pp. 129-136. ISSN 0378-4371
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S03784...
Related URL: http://dx.doi.org/10.1016/S0378-4371(02)01416-4
Abstract
Mixtures of flowing granular materials containing particles of different sizes or different densities have a tendency to segregate. We focus here on the segregation that occurs in the cross-section of the cylinder using short cylinders (axial length is much smaller than the diameter) ensuring small variation along the cylinder axis. The typical structure formed in these systems is a radial core of the smaller or more dense particles. Coupling of composition with flow can lead to instability causing a pattern of radial streaks. The predictions of hard sphere mixture theories are briefly discussed first. Results of experimental and modelling studies of segregation are reviewed for density-induced radial segregation of equal sized particles, and size-induced radial streak formation. Experimental results for size-induced radial segregation are presented.
Item Type: | Article |
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Source: | Copyright of this article belongs to European Physical Society. |
Keywords: | Granular Flow; Segregation; Rotating Cylinder; Surface Flow |
ID Code: | 17382 |
Deposited On: | 16 Nov 2010 08:25 |
Last Modified: | 17 May 2016 02:01 |
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