Dry granular collapse into a liquid: Role of viscous dissipation on granular flow regimes and associated waves
During the generation of free-surface waves in landslide-tsunami modeling, the importance of grain-fluid interaction is still not well identified. To clarify this, the present study examines experimentally the role of viscous dissipation on the dynamics of dry granular masses collapsing into a liquid pool, by varying both the grain size and liquid viscosity. The experiments reveal a richness in granular collapse regimes, from dilute- and dense-inertial to dense-viscous regimes, that significantly influence the entire wave train, while having limited impact on the leading and largest wave.
Authors
- Laurent Lacaze (ORCID: https://orcid.org/0000-0002-4945-7445)
- Alexis Bougouin (ORCID: https://orcid.org/0000-0002-9530-9718)
- Olivier Roche (ORCID: https://orcid.org/0000-0002-6751-6904)
- Raphaël Paris (ORCID: https://orcid.org/0000-0003-4569-5187)
- Sylvain Viroulet (ORCID: https://orcid.org/0000-0002-8204-1425)
Institutions
- Université Clermont Auvergne (FR)
- Institut de Mécanique des Fluides de Toulouse (FR)
- Laboratoire Magmas et Volcans (FR)
- University of Calabria (IT)
Publication Details
- Journal
- Physical Review Fluids
- Published
- 2024-12-06
- DOI
- https://doi.org/10.1103/physrevfluids.9.124302
- Citations
- 2
- Primary Topic
- Landslides and related hazards
- Type
- article
- Field-Weighted Citation Impact
- 1.42
Funders
- Agence Nationale de la Recherche
- Centre National de la Recherche Scientifique