- 1University Grenoble Alpes, CNRS, INRAE, IGE/LEGI, Grenoble Cedex 9, France (julien.chauchat@univ-grenoble-alpes.fr)
- 2University Grenoble Alpes, CNRS, LEGI, Grenoble Cedex 9, France
- 3Institut de Mécanique des Fluides de Toulouse (IMFT), Université de Toulouse, CNRS, Toulouse, France
- 4Laboratoire Energies et Mécanique Théorique et Appliquée (LEMTA), Université de Lorraine, CNRS, 54500, Nancy, France
- 5University of Manchester
In this contribution, we present 3D two-phase flow simulations of lock-release turbidity currents using sedFOAM. The Large Eddy Simulation is used for the turbulence modeling while the granular stresses are modeled using a frictional-collisional kinetic theory including interparticle friction (Chassagne et al., 2023). Simulations are performed for different bed slopes, initial volume fractions and particle diameter and density. The numerical results are compared with experiments in terms of front propagation and current shape (Gadal et al., 2023). The simulation results are further used to infer the mechanisms controlling the current attenuation, i.e. the current propagation speed reduction with time. We further use the model to analyse the influence of the flume geometry, free surface versus rigid roof.
How to cite: chauchat, J., sharma, M., Rastello, M., Bonamy, C., Gadal, C., Dossmann, Y., Mercier, M., and Lacaze, L.: 3D two-phase flow simulations of lock-release turbidity currents, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-20195, https://doi.org/10.5194/egusphere-egu25-20195, 2025.
