Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Onset of Immersed Granular Avalanches by DEM-LBM Approach
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.
Onset of Immersed Granular Avalanches by DEM-LBM Approach
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.
Onset of Immersed Granular Avalanches by DEM-LBM Approach
Bonelli, Stéphane (Herausgeber:in) / Dascalu, Cristian (Herausgeber:in) / Nicot, François (Herausgeber:in) / Delenne, Jean-Yves (Autor:in) / Mansouri, M. (Autor:in) / Radjaї, F. (Autor:in) / Youssoufi, M. S. El (Autor:in) / Seridi, A. (Autor:in)
28.05.2011
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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