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Quantitative predictions of the µ(I) rheology in 2D and 3D granular column collapse: scaling laws and quasi-static vs. inertial regimes

Abstract : We introduce an accurate numerical method for the computation of 2D and 3D granular collapse under gravity flows using the μ(I) rheology. We show that this rheology can capture the two experimentally observed types of spreading and the corresponding scaling laws, and we provide an accurate sensitivity analysis to rheological constants. Finally, we underline the role of an additional length scale on the spreading dynamics.
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Submitted on : Friday, November 10, 2017 - 4:25:40 PM
Last modification on : Thursday, September 24, 2020 - 5:22:58 PM
Long-term archiving on: : Sunday, February 11, 2018 - 3:12:45 PM

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Rudy Valette, Stéphanie Riber, Romain Castellani, Elie Hachem. Quantitative predictions of the µ(I) rheology in 2D and 3D granular column collapse: scaling laws and quasi-static vs. inertial regimes. 23ème Congrès Français de Mécanique [CFM2017], Association Française de Mécanique (AFM), Aug 2017, Lille, France. 6 p. ⟨hal-01632643⟩

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