Article (Scientific journals)
Long lasting instabilities in granular mixtures
Caps, Hervé; Michel, Renaud; Lecocq, N. et al.
2003In Physica A. Statistical Mechanics and its Applications, 326 (3-4), p. 313-321
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Keywords :
granular flow; mixing; segregation and stratification; porous materials; granular materials
Abstract :
[en] We have performed experiments of axial segregation in the Oyama's drum. We have tested binary granular mixtures during very long times. The segregation patterns have been captured by a CCD camera and spatio-temporal graphs are created. We report the occurrence of instabilities which can last several hours! We stress that those instabilities originate from the competition between axial and radial segregations. We put into evidence the occurrence of giant fluctuations in the fraction of grain species along the surface during the unstable periods. (C) 2003 Elsevier B.V. All rights reserved.
Disciplines :
Physics
Author, co-author :
Caps, Hervé ;  Université de Liège - ULiège > Département de physique > Optofluidique
Michel, Renaud
Lecocq, N.
Vandewalle, Nicolas  ;  Université de Liège - ULiège > Département de physique > Physique statistique
Language :
English
Title :
Long lasting instabilities in granular mixtures
Publication date :
15 August 2003
Journal title :
Physica A. Statistical Mechanics and its Applications
ISSN :
0378-4371
eISSN :
1873-2119
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
326
Issue :
3-4
Pages :
313-321
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 07 October 2009

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