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Communication Dans Un Congrès Année : 2017

Dry granular avalanche impact force on a rigid wall of semi-infinite height

Force d'impact d'une avalanche de grains secs sur un mur rigide de hauteur semi-infinie

Résumé

The present paper tackles the problem of the impact of a dry granular avalanche-flow on a rigid wall of semi-infinite height. An analytic force model based on depth-averaged shock theory is proposed to describe the flow-wall interaction and the resulting impact force on the wall. Provided that the analytic force model is fed with the incoming flow conditions regarding thickness, velocity and density, all averaged over a certain distance downstream of the undisturbed incoming flow, it reproduces very well the time history of the impact force actually measured by detailed discrete element simulations, for a wide range of slope angles.
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hal-01997855 , version 1 (29-01-2019)

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Adel Albaba, Stéphane Lambert, Thierry Faug. Dry granular avalanche impact force on a rigid wall of semi-infinite height. Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media, Jul 2017, Montpellier, France. pp.03054, ⟨10.1051/epjconf/201714003054⟩. ⟨hal-01997855⟩

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