Theory of Suspension Segregation in Partially Filled Horizontal Rotating Cylinders

Details Theory of Suspension Segregation in Partially Filled Horizontal Rotating Cylinders Theory of Suspension Segregation in Partially Filled Horizontal Rotating Cylinders

2001-09-24

arxiv.org/abs/cond-mat/0109428v1

Physics

Condensed Matter

Soft Condensed Matter

Accepted for publication in Phys Fluids (Lett) 10 pages, two eps figures

Scientific paper

10.1063/1.1418362

It is shown that a suspension of particles in a partially-filled, horizontal, rotating cylinder is linearly unstable towards axial segregation and an undulation of the free surface at large enough particle concentrations. Relying on the shear-induced diffusion of particles, concentration-dependent viscosity, and the existence of a free surface, our theory provides an explanation of the experiments of Tirumkudulu et al., Phys. Fluids 11, 507-509 (1999); ibid. 12, 1615 (2000).

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