Particle Migration Rates In A Couette Apparatus
Author(s)
S.-C. Hsiao, D. Christensen, M.S. Ingber, L.A. Mondy & S.A. Altobelli
Abstract
Bulk migration of particles towards regions of lower
shear occurs in suspensions of neutrally buoyant spheres in Newtonian
fluids undergoing creeping flow in the annular region between two
rotating, coaxial cylinders (a wide-gap Couette). For a monomodal
suspension of spheres in a viscous fluid, dimensional analysis indicates
that the rate of migration at a given concentration should scale with
the square of the sphere radius. However, a previous experimental
study [12] showed that the rate of migration of spherical particles
at 50% volume concentration actually scaled with the sphere radius
to approximately the 2.9 power. In the current s
Keywords
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