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Size separation of granular particles

Author

Listed:
  • Matthias E. Möbius

    (University of Chicago)

  • Benjamin E. Lauderdale

    (University of Chicago)

  • Sidney R. Nagel

    (University of Chicago)

  • Heinrich M. Jaeger

    (University of Chicago)

Abstract

Granular media differ from other materials in their response to stirring or jostling — unlike two-fluid systems, bi-disperse granular mixtures will separate according to particle size when shaken, with large particles rising, a phenomenon termed the 'Brazil-nut effect'1,2,3,4,5,6,7,8. Mounting evidence indicates that differences in particle density affect size separation in mixtures of granular particles9,10,11. We show here that this density dependence does not follow a steady trend but is non-monotonic and sensitive to background air pressure. Our results indicate that particle density and interstitial air must both be considered in size segregation.

Suggested Citation

  • Matthias E. Möbius & Benjamin E. Lauderdale & Sidney R. Nagel & Heinrich M. Jaeger, 2001. "Size separation of granular particles," Nature, Nature, vol. 414(6861), pages 270-270, November.
    • Handle: RePEc:nat:nature:v:414:y:2001:i:6861:d:10.1038_35104697
    DOI: 10.1038/35104697
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    Cited by:

    1. Han, Hong & Jiang, Ze Hui & Zhang, Rui & Lyu, Jing, 2014. "The influence of air on period doubling motion in vertically vibrated grains beds," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 403(C), pages 265-275.

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