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Mixing of granular materials: a test-bed dynamical system for pattern formation

DSpace at IIT Bombay

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Title Mixing of granular materials: a test-bed dynamical system for pattern formation
 
Creator HILL, KM
GILCHRIST, JF
OTTINO, JM
KHAKHAR, DV
MCCARTHY, JJ
 
Subject horizontal rotating cylinder
radial segregation
axial segregation
chaotic advection
size segregation
drum
solids
particles
media
flow
 
Description Mixing of granular materials provides fascinating examples of pattern formation and self-organization. More mixing action - for example, increasing the forcing with more vigorous shaking or faster tumbling - does not guarantee a better-mixed final system. This is because granular mixtures of just barely different materials segregate according to density and size; in fact, the very same forcing used to mix may unmix. Self-organization results from two competing effects: chaotic advection or chaotic mixing, as in the case of fluids, and flow-induced segregation, a phenomenon without parallel in fluids. The rich array of behaviors is ideally suited for nonlinear-dynamics-based inspection. Moreover, the interplay with experiments is immediate. In fact, these systems may constitute the simplest example of coexistence between chaos and self-organization that can be studied in the laboratory. We present a concise summary of the necessary theoretical background and central physical ideas accompanied by illustrative experimental results to aid the reader in exploring this fascinating new area.
 
Publisher WORLD SCIENTIFIC PUBL CO PTE LTD
 
Date 2011-10-14T11:19:36Z
2011-12-15T09:16:19Z
2011-10-14T11:19:36Z
2011-12-15T09:16:19Z
1999
 
Type Review
 
Identifier INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS,9(8)1467-1484
0218-1274
http://dx.doi.org/10.1142/S0218127499001036
http://dspace.library.iitb.ac.in/xmlui/handle/10054/13904
http://hdl.handle.net/100/3104
 
Language en