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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. doi:10.1103/PhysRevLett.108.228302
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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 | ||||
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| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science > Centre for Complexity Science Faculty of Science > Physics |
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| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 1 June 2012 | ||||
| Dates: |
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| Volume: | Vol.108 | ||||
| Number: | No.22 | ||||
| Number of Pages: | 5 | ||||
| Page Range: | Article: 228302 | ||||
| DOI: | 10.1103/PhysRevLett.108.228302 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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