Skip to main content
Log in

Surface flows of granular mixtures: II. Segregation with grains of different size

  • Published:
The European Physical Journal B - Condensed Matter and Complex Systems Aims and scope Submit manuscript

Abstract:

We present the generalization of a theoretical model for segregation of granular mixtures due to surface flows, published in J. Phys. I France 6, 1295 (1996). Our generalized model is valid for grains differing by their size and/or their surface properties; in the present paper, we describe the case of two species with the same surface properties but two different sizes. The rolling stream is assumed to be homogeneous. Exchanges between the grains at rest and the rolling stream are modelized via binary collisions. The model predicts that during the filling of a two-dimensional silo, continuous segregation appears inside the static phase: small (respectively large) grains tend to stop uphill (respectively downhill), although both species remain present everywhere. This fits the observations when the size difference between the species is small. When the size difference is large, a different regime is observed. We argue that in this case, segregation occurs directly inside the rolling stream.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Author information

Authors and Affiliations

Authors

Additional information

Received: 25 February 1998 / Received in final form and Accepted: 6 July 1998

Rights and permissions

Reprints and permissions

About this article

Cite this article

Boutreux, T. Surface flows of granular mixtures: II. Segregation with grains of different size. Eur. Phys. J. B 6, 419–424 (1998). https://doi.org/10.1007/s100510050569

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s100510050569

Navigation