Effects of gas flow and turbulent diffusion on the centrifugal classification of fine particles

The mass movement of fine particles and changes in their trajectories under the effect of centrifugal, gravitational, and aerodynamic forces is studied by numerical modeling of turbulent swirling flow. The effect of turbulent migration of solid particles due to pulsating gas flow velocities on the aerodynamics of particles and, consequently, on the efficiency of the process of separation of particles by size is analyzed. The studies revealed the behavior laws of probability curve of separation of particles by size and showed the effect of regime and geometric parameters on the process of classification of fine powders.