Abstract
Radial and axial segregation is investigated experimentally in polydisperse mixtures of granular materials rotated in a long, partly filled, horizontal cylinder. Radial segregation by size is observed in all polydisperse mixtures. Axial segregation, with smaller-size particles forming bands within bands of larger-size particles, is observed for mixtures of 3 sizes. In addition, bands in ternary mixtures oscillate axially under some conditions. It is observed that the surface flow speeds depend on the particle size, both in the mixed and segregated case. A simple microscopic model based solely on different frictional properties of three particles yields qualitatively similar results.
Original language | Undefined |
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Pages (from-to) | 205-211 |
Journal | Europhysics letters |
Volume | 66 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2004 |
Keywords
- IR-61311