https://doi.org/10.1051/epjconf/202124909011
On water waves generated by gravity driven granular collapse
1
Université Paris-Saclay, CNRS, Laboratoire FAST, F-91405 Orsay, France
2
University of California, Santa Barbara, Department of Mechanical Engineering, USA
* e-mail: wladimir.sarlin1@universite-paris-saclay.fr
** e-mail: cyprien.morize@universite-paris-saclay.fr
Published online: 7 June 2021
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.
A video is available at https://doi.org/10.48448/qsmj-sk52
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
