Spreading fronts in sedimentation of dilute suspension of spheres

The thickness of the diffuse front between a sedimenting dilute suspension and the clear fluid above grows linearly in time due to polydispersity in the size of the particles and due to a hydrodynamic effect in which randomly heavy clusters fall out of the front leaving it depleted. Experiments and...

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Bibliographic Details
Published in:Physics of fluids (1994) 2008-02, Vol.20 (2), p.023302-023302-9
Main Authors: Gómez, Daniel Chehata, Bergougnoux, Laurence, Guazzelli, Élisabeth, Hinch, John
Format: Article
Language:English
Subjects:
Engineering Sciences
Exact sciences and technology
Fluid dynamics
Fluid mechanics
Fluids mechanics
Fundamental areas of phenomenology (including applications)
Mechanics
Multiphase and particle-laden flows
Nonhomogeneous flows
Physics
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Summary:The thickness of the diffuse front between a sedimenting dilute suspension and the clear fluid above grows linearly in time due to polydispersity in the size of the particles and due to a hydrodynamic effect in which randomly heavy clusters fall out of the front leaving it depleted. Experiments and simplified point-particle numerical simulations agree that these two effects are not simply linearly additive.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.2883960