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Segregation of granular materials in rotating cylinders

Author

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  • Khakhar, D.V.
  • Orpe, Ashish V.
  • Hajra, S.K.

Abstract

Mixtures of flowing granular materials containing particles of different sizes or different densities have a tendency to segregate. We focus here on the segregation that occurs in the cross-section of the cylinder using short cylinders (axial length is much smaller than the diameter) ensuring small variation along the cylinder axis. The typical structure formed in these systems is a radial core of the smaller or more dense particles. Coupling of composition with flow can lead to instability causing a pattern of radial streaks. The predictions of hard sphere mixture theories are briefly discussed first. Results of experimental and modelling studies of segregation are reviewed for density-induced radial segregation of equal sized particles, and size-induced radial streak formation. Experimental results for size-induced radial segregation are presented.

Suggested Citation

  • Khakhar, D.V. & Orpe, Ashish V. & Hajra, S.K., 2003. "Segregation of granular materials in rotating cylinders," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 318(1), pages 129-136.
    • Handle: RePEc:eee:phsmap:v:318:y:2003:i:1:p:129-136
    DOI: 10.1016/S0378-4371(02)01416-4
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    References listed on IDEAS

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    1. Hernán A. Makse & Shlomo Havlin & Peter R. King & H. Eugene Stanley, 1997. "Spontaneous stratification in granular mixtures," Nature, Nature, vol. 386(6623), pages 379-382, March.
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    Cited by:

    1. Chand, Ram & Khaskheli, Murad Ali & Qadir, Abdul & Ge, Baoliang & Shi, Qingfan, 2012. "Discrete particle simulation of radial segregation in horizontally rotating drum: Effects of drum-length and non-rotating end-plates," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(20), pages 4590-4596.

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