Pattern formation in a sandpile of ternary granular mixtures

Michiko Shimokawa, Yuki Suetsugu, Ryoma Hiroshige, Takeru Hirano, Hidetsugu Sakaguchi

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Pattern formation in a sandpile is investigated by pouring a ternary mixture of grains into a vertical narrow cell. Size segregation in avalanches causes the formation of patterns. Four kinds of patterns emerge: stratification, segregation, upper stratification-lower segregation, and upper segregation-lower stratification. A phase diagram is constructed in a parameter space of θ11/θ33 and θ22/θ33, where θ11,θ22, and θ33 are the repose angles of small, intermediate, and large grains, respectively. To qualitatively understand pattern formation, a phenomenological model based on a roll-or-stay rule is proposed. A similar pattern formation is found in a numerical simulation of the phenomenological model. These results suggest that the ratios of the repose angles of three kinds of grains are important for pattern formation in a sandpile.

    Original languageEnglish
    Article number062205
    JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
    Volume91
    Issue number6
    DOIs
    Publication statusPublished - Jun 9 2015

    Fingerprint

    Sandpiles
    Segregation
    Pattern Formation
    Ternary
    Stratification
    stratification
    Angle
    Avalanche
    Phase Diagram
    Parameter Space
    pouring
    Vertical
    Model-based
    guy wires
    Numerical Simulation
    avalanches
    Cell
    phase diagrams
    causes
    cells

    All Science Journal Classification (ASJC) codes

    • Statistical and Nonlinear Physics
    • Statistics and Probability
    • Condensed Matter Physics

    Cite this

    Pattern formation in a sandpile of ternary granular mixtures. / Shimokawa, Michiko; Suetsugu, Yuki; Hiroshige, Ryoma; Hirano, Takeru; Sakaguchi, Hidetsugu.

    In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 91, No. 6, 062205, 09.06.2015.

    Research output: Contribution to journalArticle

    Shimokawa, Michiko ; Suetsugu, Yuki ; Hiroshige, Ryoma ; Hirano, Takeru ; Sakaguchi, Hidetsugu. / Pattern formation in a sandpile of ternary granular mixtures. In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 2015 ; Vol. 91, No. 6.
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