Onset of Immersed Granular Avalanches by DEM-LBM Approach

Jean-Yves Delenne; M. Mansouri; F. Radjai; M. S. El Youssoufi; A. Seridi

doi:10.1007/978-94-007-1421-2_14

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Onset of Immersed Granular Avalanches by DEM-LBM Approach

Jean-Yves Delenne, M. Mansouri, F. Radjai, M. S. El Youssoufi et A. Seridi

Advances in bifurcation and degradation in geomaterials : proceedings of the 9th International Workshop on Bifurcation and Degradation in Geomaterials, pp.109-115

Springer Series in Geomechanics and Geoengineering

01/01/2011

DOI: https://doi.org/10.1007/978-94-007-1421-2_14

Résumé

Engineering

Engineering, Geological

Science & Technology

Technology

We present 3D grain-fluid simulations based on the discrete element method interfaced with the lattice Boltzmann method and applied to investigate the initiation of underwater granular flows. We prepare granular beds of 800 spherical grains with different values of the initial solid fraction in a biperiodic rectangular box. In order to trigger an avalanche, the bed is instantaneously tilted to a finite slope angle above the maximum angle of stability. We simulate the dynamics of the transient flow for different solid fractions. In agreement with the experimental work of Iverson (Water Resour Res 36(7):1897-1910, 2000) and Pailha et al. (Phys Fluids 20(11):111701, 2008), we find that the flow onset is controlled by the initial solid fraction.

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Détails

Titre: Onset of Immersed Granular Avalanches by DEM-LBM Approach
Créateurs - sans rôle: Jean-Yves Delenne - Univ Montpellier 2, CNRS, LMGC,UMR 5508, MIST,IRSN DPAM, Cc 048,Pl E Bataillon, F-34095 Montpellier 5, France
M. Mansouri - Univ Ferhat Bbas, Dept Genie Civil, Setif 19000, Algeria
F. Radjai - Univ Montpellier 2, CNRS, LMGC,UMR 5508, MIST,IRSN DPAM, Cc 048,Pl E Bataillon, F-34095 Montpellier 5, France
M. S. El Youssoufi - Laboratoire de Mécanique et Génie Civil
A. Seridi - Univ Mhamed Bougara, Lab Mecan Solides & Syst LM2S, Boumerdes, Algeria
Contributeurs - sans rôle: S Bonelli
C Dascalu
F Nicot
Détails de publication: Advances in bifurcation and degradation in geomaterials : proceedings of the 9th International Workshop on Bifurcation and Degradation in Geomaterials, pp.109-115
Publications en série: Springer Series in Geomechanics and Geoengineering
Éditeur: Springer Nature
Nombre de pages: 7
Identifiants: 99138764809311
Unité académique: Ingénierie des Agropolymères et Technologies Emergentes - IATE
Langue: English
Type de ressource: Conference proceeding