Particle segregation in monodisperse sheared suspensions

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Physics of Fluids (1994)

DOI:https://doi.org/10.1063/1.869923· OSTI ID:304239

Tirumkudulu, M; Tripathi, A; Acrivos, A ^[1]

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1. The Levich Institute, The City College of the City Univeristy of New York, New York, New York 10031 (United States)

It has been known for a long time that many mixtures of granular materials tend to segregate when tumbled in a rotating horizontal cylinder, with the different components separating into bands of relatively pure single concentration along the rotational axis [{ital Mixing of Solids}, Advances in Chemical Eng., edited by T. B. Drew and J. W. Hoopes (Academic Press, New York, 1952), Vol. 2, p. 211]. Here we report a phenomenon that seems to be analogous, but in suspensions of monodisperse neutrally buoyant spherical particles in a Newtonian liquid medium being sheared in a partially filled horizontal Couette device in which the suspension separates itself into alternating regions of high and low particle concentration along the length of the tube. The experiment is mostly qualitative, the aim at this stage being primarily to provide photographic evidence of a curious and as yet unexplained phenomenon. {copyright} {ital 1999 American Institute of Physics.}

• OSTI ID: 304239
• Journal Information: Physics of Fluids (1994), Journal Name: Physics of Fluids (1994) Journal Issue: 3 Vol. 11; ISSN 1070-6631; ISSN PHFLE6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GRANULAR MATERIALS
LIQUIDS
MIXTURES
SEGREGATION
SUSPENSIONS