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Geomechanics from Micro to MacroInteraction between two localized fluidization cavities in granular media : Experiments and numerical simulation

TitleGeomechanics from Micro to MacroInteraction between two localized fluidization cavities in granular media : Experiments and numerical simulation
Publication TypeConference Proceedings
Year of Publication2014
AuthorsNgoma J, Philippe P, Bonelli S, Delenne J-Y, Radjaï F
EditorSoga K, Kumar K, Biscontin G, Kuo M
SponsorInt Soc Soil Mech & Geotechn Engn, Geo Mech Micro Macro Tech Comm 105
Conference Name3rd International Symposium on Geomechanics from Micro to Macro
VolumeGeomechanics from Micro to Macro
Number of VolumesVols I and II
Pagination1571 - 1576
Date PublishedSep-2014
PublisherCRC Press
Conference LocationSEP 01-03-2014 Univ Cambridge, Cambridge, ENGLAND
ISBN Number978-1-138-02707-7
Abstract

In this work, we present experimental and numerical results on the interaction between two localized fluidization cavities in an immersed granular packing. According to the gap between the two locally injected upward fluid flows, each fluidized cavity will evolve independently of the another, or conversely, the two cavities can interact with each other: they merge and eventually behave like a single cavity. Combined optical techniques are used for visualization of particle motion inside the granular media (Refractive Index-Matching between liquid and beads and Planar Laser-Induced Fluorescence), the experimental results are compared to a two-dimensional simulation based on coupled Discrete Element and Lattice Boltzmann Methods (DEM-LBM).

DOI10.1201/b17395-286
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