Article (Scientific journals)
Patterns in hydraulic ripples with binary granular mixtures
Caps, Hervé; Vandewalle, Nicolas
2002In Physica A. Statistical Mechanics and its Applications, 313 (3-4), p. 357-364
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Keywords :
patterns formation; phase segregation; instability
Abstract :
[en] An experimental study of a binary granular mixture submitted to a transient shear flow in a cylindrical container is reported. The formation of ripples with a spiral shape is observed. The appearance of phase segregation in those spiral patterns is shown. The relative grain size between sand species is found to be a relevant parameter leading to phase segregation. However, the relative repose angle is an irrelevant parameter. The formation of sedimentary structures is also presented. They result from a ripple climbing process. The "sub-critical" or "super-critical" character of the lamination patterns is shown to depend on the rotation speed of the container. (C) 2002 Elsevier Science B.V. All rights reserved.
Disciplines :
Physics
Author, co-author :
Caps, Hervé ;  Université de Liège - ULiège > Département de physique > Optofluidique
Vandewalle, Nicolas  ;  Université de Liège - ULiège > Département de physique > Physique statistique
Language :
English
Title :
Patterns in hydraulic ripples with binary granular mixtures
Publication date :
15 October 2002
Journal title :
Physica A. Statistical Mechanics and its Applications
ISSN :
0378-4371
eISSN :
1873-2119
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
313
Issue :
3-4
Pages :
357-364
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 August 2009

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