Orientational order and alignment of elongated particles induced by shear

T. Börzsönyi, Balázs Szabó, Gábor Törös, Sandra Wegner, János Török, Ellák Somfai, Tomasz Bien, Ralf Stannarius

Research output: Contribution to journalArticle

65 Citations (Scopus)

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.

Original languageEnglish
Article number228302
JournalPhysical Review Letters
Volume108
Issue number22
DOIs
Publication statusPublished - May 30 2012

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alignment
shear
granular materials
particle interactions
aspect ratio
friction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Börzsönyi, T., Szabó, B., Törös, G., Wegner, S., Török, J., Somfai, E., ... Stannarius, R. (2012). Orientational order and alignment of elongated particles induced by shear. Physical Review Letters, 108(22), [228302]. https://doi.org/10.1103/PhysRevLett.108.228302

Orientational order and alignment of elongated particles induced by shear. / Börzsönyi, T.; Szabó, Balázs; Törös, Gábor; Wegner, Sandra; Török, János; Somfai, Ellák; Bien, Tomasz; Stannarius, Ralf.

In: Physical Review Letters, Vol. 108, No. 22, 228302, 30.05.2012.

Research output: Contribution to journalArticle

Börzsönyi, T, Szabó, B, Törös, G, Wegner, S, Török, J, Somfai, E, Bien, T & Stannarius, R 2012, 'Orientational order and alignment of elongated particles induced by shear', Physical Review Letters, vol. 108, no. 22, 228302. https://doi.org/10.1103/PhysRevLett.108.228302
Börzsönyi, T. ; Szabó, Balázs ; Törös, Gábor ; Wegner, Sandra ; Török, János ; Somfai, Ellák ; Bien, Tomasz ; Stannarius, Ralf. / Orientational order and alignment of elongated particles induced by shear. In: Physical Review Letters. 2012 ; Vol. 108, No. 22.
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