On the dispersion of solid particles in a liquid agitated by a bubble swarm

Thomas Bonometti (1, 2) , Jacques Magnaudet (1) , Pascal Gardin (3)

1 IMFT - Institut de mécanique des fluides de Toulouse
2 UF|MAE - Department of Mechanical and Aerospace Engineering [Gainesville]
3 ArcelorMittal Maizières Research SA

This article deals with the dispersion of solid particles in a liquid agitated by a homogeneous swarm of bubbles. The scale of interest lies between the plant scale (of the order of the tank) and the microscale (less than the bubble diameter). The strategy consists in simulating both the twophase flow of deforming bubbles and the motion of solid particles. The evolution of the spatial distribution of particles together with the encounter and entrainment phenomena is studied as a function of the void fraction and the relative size and mass of particles. The influence of the shape of the bubble and of the model of forces that govern the motion of particles is also considered.

Mots clés: Dispersion; Solid particles; Bubble swarm

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

Thomas Bonometti, Jacques Magnaudet, Pascal Gardin. On the dispersion of solid particles in a liquid agitated by a bubble swarm. Metallurgical and Materials Transactions B, 2007, vol. 38B, pp. 739-750. ⟨10.1007/s11663-007-9085-7⟩. ⟨hal-00862695⟩