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Bidisperse Granular Flow on Inclined Rough Planes

In: Traffic and Granular Flow’05

Author

Listed:
  • Céline Goujon

    (Université de Provence, IUSTI
    Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales)

  • Blanche Dalloz-Dubrujeaud

    (Université de Provence, IUSTI)

  • Nathalie Thomas

    (Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales)

Abstract

Summary Experiments on bidisperse dry granular flows on an inclined rough plane were made in order to better understand the rheology of this kind of material. Flows, created by a localised input of a granular matter onto the plane, propagate and spread laterally, being unconfined by the experimental set-up. Because of size segregation, the lateral and vertical inhomogeneous repartitions of particles lead to several effects causing the main difference between bidisperse and monodisperse flow: the outline effect and the interfaces effects. The outline effect is due to the large beads at the front, and at the borders of the flow. It can be interpreted using the relative frictions of the two types of beads on the rough plane. The relative friction has been quantified with experiments on monodisperse granular flows. The interfaces effects deal with the interaction between the layers of large and small beads and with the interaction between the small beads and the plane. It combines friction, dragging and longitudinal separation of th etwo superposed layers of beads.

Suggested Citation

  • Céline Goujon & Blanche Dalloz-Dubrujeaud & Nathalie Thomas, 2007. "Bidisperse Granular Flow on Inclined Rough Planes," Springer Books, in: Andreas Schadschneider & Thorsten Pöschel & Reinhart Kühne & Michael Schreckenberg & Dietrich E. Wol (ed.), Traffic and Granular Flow’05, pages 147-156, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-47641-2_11
    DOI: 10.1007/978-3-540-47641-2_11
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