Micrometric Granular Ripple Patterns in a ...
Document type :
Article dans une revue scientifique
Title :
Micrometric Granular Ripple Patterns in a Capillary Tube
Author(s) :
Zoueshtiagh, Farzam [Auteur]
Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Thomas, Peter J. [Auteur]
Thomy, Vincent [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Merlen, Alain [Auteur]
Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Thomas, Peter J. [Auteur]
Thomy, Vincent [Auteur]

Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Merlen, Alain [Auteur]

Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Journal title :
Physical Review Letters
Pages :
054501
Publisher :
American Physical Society
Publication date :
2008
ISSN :
0031-9007
English abstract : [en]
The oscillatory motion of a fluid carrying micron-sized particles inside a capillary tube is investigated experimentally. It is found that initially uniformly distributed particles can segregate and accumulate to form ...
Show more >The oscillatory motion of a fluid carrying micron-sized particles inside a capillary tube is investigated experimentally. It is found that initially uniformly distributed particles can segregate and accumulate to form regularly spaced micron-sized particle clusters. The wavelength of the microclusters is compared to data for macroscale sand-ripple patterns and found to obey the same universal scaling as these. A dimensional analysis is performed that confirms the universality of the experimentally observed scaling. The experimental data for the microripple clusters further suggest the existence of a minimum particle length scale for which patterns can form and below which the Brownian motion associated with the molecules of the matrix fluid inhibits pattern formation.Show less >
Show more >The oscillatory motion of a fluid carrying micron-sized particles inside a capillary tube is investigated experimentally. It is found that initially uniformly distributed particles can segregate and accumulate to form regularly spaced micron-sized particle clusters. The wavelength of the microclusters is compared to data for macroscale sand-ripple patterns and found to obey the same universal scaling as these. A dimensional analysis is performed that confirms the universality of the experimentally observed scaling. The experimental data for the microripple clusters further suggest the existence of a minimum particle length scale for which patterns can form and below which the Brownian motion associated with the molecules of the matrix fluid inhibits pattern formation.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Non spécifiée
Popular science :
Non
Source :