Rotational sedimentation in suspensions with neutrally boyant particles

Rotational sedimentation of neutrally buoyant particles in suspensions is studied by mathematical simulation in the case of two-dimensional circular flows between two cylinders. Particle separation in the absence of gravity is caused by rotation of the inner cylinder. It is revealed that sedimentation depends on particle rotation. Within the framework of the Cosserat continuum, the suspension is considered as a micropolar fluid. The effect of the eccentricity of noncoaxial cylinders on the sedimentation front is investigated.