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Orientational order and alignment of elongated particles induced by shear
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Börzsönyi, Tamás, Szabó, Balázs, Törös, Gábor, Wegner, Sandra, Török, János, Somfai, Ellák, Bien, Tomasz and Stannarius, Ralf. (2012) Orientational order and alignment of elongated particles induced by shear. Physical Review Letters, Vol.108 (No.22). Article: 228302. ISSN 0031-9007
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.108.228302
Abstract
Shear induced alignment of elongated particles is studied experimentally and numerically. We show that shear alignment of ensembles of macroscopic particles is comparable even on a quantitative level to simple molecular systems, despite the completely different types of particle interactions. We demonstrate that for dry elongated grains the preferred orientation forms a small angle with the streamlines, independent of shear rate across three decades. For a given particle shape, this angle decreases with increasing aspect ratio of the particles. The shear-induced alignment results in a considerable reduction of the effective friction of the granular material.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Centre for Complexity Science Faculty of Science > Physics |
| Journal or Publication Title: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| Date: | 1 June 2012 |
| Volume: | Vol.108 |
| Number: | No.22 |
| Number of Pages: | 5 |
| Page Range: | Article: 228302 |
| Identification Number: | 10.1103/PhysRevLett.108.228302 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/46144 |
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