The Dynamics of Granular Flow in Hopper Silos
Hagos Eman, Timothy Newson, Aly Ahmed
Dans les comptes rendus d’articles de la conférence: GeoVirtual 2020: 73rd Canadian Geotechnical ConferenceABSTRACT: Particle Image Velocimetry (PIV) based experimental tests have been used to investigate the granular flow properties in a half model smooth-sided silo hopper. This paper shows that the flow patterns and dynamic flow properties of a model silo system under natural gravity can be effectively captured using PIV. The technique appears to be a valuable additional tool for practical and experimental capture of the material flow. The results in the paper show that the flow mechanisms in a silo are quite complex and vary temporally and spatially. Three distinct zones of behaviour were observed: a) an upper inflow zone, b) a narrow vertical funnel flow zone and c) a near static stagnant zone. The characteristics of these flow zones are likely to be influenced by the material and geometric properties of the silo. Additional testing will be conducted by the researchers with other materials, silo geometries and enhanced gravities in the centrifuge, to further understand the physical processes involved and the limitations of the experimental methods.
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Eman, Hagos, Newson, Timothy, Ahmed, Aly (2020) The Dynamics of Granular Flow in Hopper Silos in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Eman_GEO2020_115,
author = Hagos Eman, Timothy Newson, Aly Ahmed,
title = The Dynamics of Granular Flow in Hopper Silos ,
year = 2020
}
title = The Dynamics of Granular Flow in Hopper Silos ,
year = 2020
}