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Theory of Suspension Segregation in Partially Filled Horizontal Rotating Cylinders

Rama Govindarajan·Prabhu R. Nott·Sriram Ramaswamy
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Abstract

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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Rama Govindarajan, Prabhu R. Nott, Sriram Ramaswamy. 2001-09-24. Theory of Suspension Segregation in Partially Filled Horizontal Rotating Cylinders. https://doi.org/10.1063/1.1418362

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