Numerical Simulation of Flows in a Cyclone Chamber with Different Conditions of Air Inlet and Outlet

A numerical investigation of flows in a cyclone chamber has been carried out at the fraction of bottom blast φ =0–0.5, at the values of the dimensionless pinch diameter dout/D =0.7 with different locations and configurations of nozzles for air intake. In the simulation of swirling flows, the well-known k–ε and k–ω turbulence models, as well as the laminar flow model, were used. A satisfactory agreement between the results of numerical simulation and experimental data at dout/D =0.5–0.7 is obtained. For a chamber with a relative pinch diameter dout/D =0.3 the calculated flow parameters differ substantially from experimental values. © 2014, Springer Science+Business Media New York.