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Microscopic picture of the erosion and sedimentation processes in dense granular flows

Abstract : We introduce a novel microscopic model for gravity-driven dense granular flows at small inertial numbers, involving friction, geometry, and nonlocal collisional effects. Through the detailed description of the exchange mechanisms between a fluid phase and a solid one, the model allows to build a complete phase diagram including erosion, sedimentation, and stationary-flow regimes. The predictions are confronted to original results from discrete-element-method simulations, and to experiments from the literature. The quantitative agreement allows to characterize the size and shape of the cooperative regions, and to unify various configurations, observations, and observables from the literature.
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https://hal.archives-ouvertes.fr/hal-02419372
Contributor : Thomas Salez <>
Submitted on : Thursday, December 19, 2019 - 2:21:39 PM
Last modification on : Tuesday, September 22, 2020 - 12:14:03 PM
Long-term archiving on: : Friday, March 20, 2020 - 7:14:12 PM

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Identifiers

  • HAL Id : hal-02419372, version 1
  • ARXIV : 1912.10873

Citation

Pierre Soulard, Denis Dumont, Thomas Salez, Elie Raphaël, Pascal Damman. Microscopic picture of the erosion and sedimentation processes in dense granular flows. 2019. ⟨hal-02419372v1⟩

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