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Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part II: cohesive materials

descriptionPublicationkeyboard_double_arrow_right Article , Journal 27 May 2008 France Publisher:Springer Science and Business Media LLCJournal:Granular Matter, volume 10, pages 361-367 (issn: 1434-5021, eissn: 1434-7636,

Authors: De Ryck, Alain; Ansart, Renaud; Dodds, John A.;

doi: 10.1007/s10035-008-0106-2 , 10.1007/s10035-008-0105-3

Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part II: cohesive materials

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Abstract

A strain-rate dependent rheology for granular materials with a constant cohesion, is proposed and applied in the case of a flow down an inclined channel. The results obtained show that a plug flow zone appears below the free surface and show that low cohesion may affect drastically the flow behaviour when the inclination of the channel is close to the repose angle. These results give also a basic understanding of hstop, the depth of the remaining granular layer on an inclined channel, treating dilatancy like a cohesion-like behaviour.

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Keywords

Granular materials · Surface flows, [SPI.GPROC] Engineering Sciences/Chemical and Process Engineering, Matériaux, [ SPI.MAT ] Engineering Sciences [physics]/Materials, materiau granulaire, Surface flows, [SPI.MAT]Engineering Sciences [physics]/Materials, ecoulement surface, [SPI]Engineering Sciences [physics], Granular materials * Surface flows, MAT] Sciences de l'ingénieur/Matériaux [[SPI], [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Génie des procédés, GPROC] Sciences de l'ingénieur/Génie des procédés [[SPI], Granular materials, GPROC] Engineering Sciences/Chemical and Process Engineering [[SPI], [ SPI.GPROC ] Engineering Sciences [physics]/Chemical and Process Engineering, MAT] Engineering Sciences/Materials [[SPI], [SPI.MAT] Engineering Sciences/Materials

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