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A non-standard statistical approach to the silo discharge

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Abstract.

We present molecular dynamics simulations of the beginning of a silo discharge by gravity. The evolution of the velocity profile and the probability density functions for the displacements of the grains are obtained. These PDFs reveal non-gaussian statistics and superdiffusive behavior similar to that observed in some experiments. We propose an analytical expression for the PDFs and an explanation for its dynamical origin in connection with the ideas of the “spot" model and non-extensive thermodynamics.

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Authors and Affiliations

  1. Department of Physics and Applied Mathematics, Universidad de Navarra, 31080, Pamplona, Spain

    R. Arévalo & A. Garcimartín

  2. Also at Physics Institute, Universidad de Navarra, 31080, Pamplona, Spain

    D. Maza

Authors
  1. R. Arévalo
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  2. A. Garcimartín
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  3. D. Maza
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Arévalo, R., Garcimartín, A. & Maza, D. A non-standard statistical approach to the silo discharge. Eur. Phys. J. Spec. Top. 143, 191–197 (2007). https://doi.org/10.1140/epjst/e2007-00087-9

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  • DOI: https://doi.org/10.1140/epjst/e2007-00087-9

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