Orientational order and alignment of elongated particles induced by shear
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 0031-9007Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevLett.108.228302
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|
|Date:||1 June 2012|
|Number of Pages:||5|
|Page Range:||Article: 228302|
|Access rights to Published version:||Restricted or Subscription Access|
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