## Abstract

The segregation phenomena of a 1:1 mixture of grain particles with different frictional properties in a rotating drum are studied by simulations. The surface flow is modeled by extending the rules from sandpile models while the rotation is modeled by a solid rotation. Radial segregation will occur only if the rotational transport rate ω is less than some critical value ω_{c}. Our results show that such a segregation can be described by a non-equilibrium critical phase transition in the steady state with the particle transport rate playing the role of the temperature. Employing finite-size scaling analysis similar to standard critical phenomena, critical exponents for the order parameter and its fluctuation are also obtained numerically.

Original language | English |
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Pages (from-to) | 659-666 |

Number of pages | 8 |

Journal | Chinese Journal of Physics |

Volume | 36 |

Issue number | 5 |

State | Published - 1998 |