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Communication Dans Un Congrès Année : 2021

On water waves generated by gravity driven granular collapse

Résumé

Tsunami-like waves can arise from large-scale geological events such as the collapse of a mountain flank or a volcano into a lake or an ocean. We here mimic this situation at the laboratory scale. The landslide is modeled by the sudden release of a rectangular granular column, which impacts a still water layer and generates a wave. Through experiments varying both the column dimensions and the initial water depth, three regimes of nonlinear waves of different shapes are reported. The amplitude and width of the generated waves are governed by a local Froude number based on the velocity of the granular front at the water surface.

Dates et versions

hal-04440249 , version 1 (05-02-2024)

Identifiants

Citer

Wladimir Sarlin, Cyprien Morize, Alban Sauret, Philippe Gondret. On water waves generated by gravity driven granular collapse. Powders and Grains, Jul 2021, Buenos AIres, Argentina. pp.09011, ⟨10.1051/epjconf/202124909011⟩. ⟨hal-04440249⟩
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