Characterization of foam flowing in a granular medium in the presence of oil by small angle neutron scattering.
Sign Up to like & getrecommendations! Published in 2020 at "Soft matter"
DOI: 10.1039/c9sm01936g
Abstract: We present an experimental study of foam-flow characterization inside a 3D granular medium packed in a cell. The foam is formed by coinjecting a surfactant solution and gas inside a cell filled with silica grains.… read more here.
Keywords: foam; medium; granular medium; characterization foam ... See more keywords
Shear instability at the interface between fluid and granular medium in a horizontal rotating cylinder
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Fluids"
DOI: 10.1063/5.0147504
Abstract: The stability of the interface between a low-viscosity fluid and a granular medium in a horizontal rotating cylinder is experimentally studied. Two cases are studied, namely, (i) plastic particles in a more dense fluid and… read more here.
Keywords: instability; granular medium; medium horizontal; fluid ... See more keywords
Slow time scales in a dense vibrofluidized granular material.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review. E"
DOI: 10.1103/physreve.102.012908
Abstract: Modeling collective motion in nonconservative systems, such as granular materials, is difficult since a general microscopic-to-macroscopic approach is not available: there is no Hamiltonian, no known stationary densities in phase space, and not a known… read more here.
Keywords: granular medium; time scales; granular material; slow time ... See more keywords
Successive reintrusions in a granular medium.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.106.014906
Abstract: We measure and analyze the drag force experienced by a rigid rod that penetrates vertically into a granular medium and partially withdraws before sinking again. The drag during the successive reintrusions is observed to be… read more here.
Keywords: modification; force; granular medium; medium ... See more keywords
Friction force regimes and the conditions for endless penetration of an intruder into a granular medium.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.96.030901
Abstract: An intruder penetrating into a granular column experiences a depth-dependent friction force F(z). Different regimes of F(z) have been measured depending on the experimental design: a nearly linear dependence for shallow penetrations, total saturation at… read more here.
Keywords: granular medium; penetration; friction force; intruder ... See more keywords
Two-dimensional numerical simulation of chimney fluidization in a granular medium using a combination of discrete element and lattice Boltzmann methods.
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review E"
DOI: 10.1103/physreve.97.052902
Abstract: We present here a numerical study dedicated to the fluidization of a submerged granular medium induced by a localized fluid injection. To this end, a two-dimensional (2D) model is used, coupling the lattice Boltzmann method… read more here.
Keywords: two dimensional; lattice boltzmann; granular medium; fluidization ... See more keywords
Investigation of cyclic disturbances in granular medium
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mining Science"
DOI: 10.1134/s1062739117022067
Abstract: The author studies stability of a structure (platform) on a pile foundation using physical modeling. Disturbing force is applied by a pendulum to generate seismic impulse vibrations. The measurement data on displacements of two points… read more here.
Keywords: granular medium; cyclic disturbances; investigation cyclic; disturbances granular ... See more keywords
Dynamic Behavior of a Granular Medium Subjected to Resonant Column Tests: Application to Ottawa Sand
Sign Up to like & getrecommendations! Published in 2019 at "Geotechnical Testing Journal"
DOI: 10.1520/gtj20170322
Abstract: This research is based on the results of 120 determinations of the shear modulus (G) of a saturated granular medium (20-40 Ottawa sand) for different conditions of relative density (Dr), effective consolidation pressure (σ’c), and… read more here.
Keywords: granular medium; resonant column; effective consolidation; ottawa sand ... See more keywords
Ejecta from Granular-Medium Cratering by a Supersonic Jet Entering a Continuum Atmosphere
Sign Up to like & getrecommendations! Published in 2021 at "AIAA Journal"
DOI: 10.2514/1.j060563
Abstract: High-fidelity three-dimensional numerical simulations are analyzed to investigate cratering on a granular bed of particles due to a supersonic multi-species fluid jet. In the simulations, the volum... read more here.
Keywords: granular medium; ejecta granular; jet; supersonic jet ... See more keywords