Non-Poisson statistics of settling spheres

Laurence Bergougnoux (1) , Elisabeth Guazzelli (1)

1 IUSTI - Institut universitaire des systèmes thermiques industriels

Direct tracking of the particle positions in a sedimenting suspension indicates that the particles are not simply randomly distributed. The initial mixing of the suspension leads to a microstructure which consists of regions devoid of particles surrounded by regions where particles have an excess of close neighbors and which is maintained during sedimentation.

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Laurence Bergougnoux, Elisabeth Guazzelli. Non-Poisson statistics of settling spheres. Physics of Fluids, 2009, 21, pp.091701. ⟨10.1063/1.3231828⟩. ⟨hal-01066993⟩