Simulation Research of the Particles’ Track in Cyclone Separator

Abstract

This paper mainly focuses on the numerical simulation of particles trajectories aiming at obtaining the movement regulations of particles with different diameters. The article takes advantage of random orbital model of phase coupling under Lagrange coordinate, and figures out that the movement of small particles has large randomness, meanwhile particles with the same diameter and different initial positions can reach various final positions, some of which can escape or be captured from the exhaust pipe. Particles trajectory can be different even if it has same diameter and initial position. The conclusion of this thesis also puts forward that three different phenomena of presentation of gray ring, short-circuit of exhaust pipe and back-mixing of dust exhaust can appear under any conditions. Almost all large particles can be captured by the cyclone separator, and few particles show retention and short time rotation in the lower part of exhaust pipe.

Energy Performance of Particle Settling in Cyclones

“…There are no experimental data providing accurate value of this parameter in the scientific surveys. Besides in the case of using semi-empirical turbulent model, it's necessary to include additional characteristics of the boundary layer determining which particles will fall out the flow, and which ones will stay in it [15,17,19]. It's stipulated by the fact that integration into the model of movement of semi-empirical dependence of Fik-Boussinesq and turbulent diffusion factor being a part of this dependence is equivalent to an assumption that the particles of addition move with the endless instantaneous velocities during the process of diffusion (dispersion) [9,16,18].…”