CFD-based multiscale modelling of bubble–particle collision efficiency in a turbulent flotation cell

In this paper, bubble–particle collision efficiency in a turbulent flow is investigated from a multiscale modelling viewpoint. An integrated CFD-based scheme for the prediction of turbulent bubble–particle collision efficiency is developed. As part of this scheme, the effect of turbulence and the bubble wall effect on bubble–particle collision efficiency are systematically studied using a 3D low turbulent Reynolds number shear-stress-transport turbulence model. Example simulations and comparisons are carried out to illustrate the methodology. The method can also be applied to non-Newtonian slurries.