标题：Numerical analysis on the effect of the vortex finder diameter and the length of vortex limiter on the flow field and particle collection in a new cyclone separator
摘要：There are many geometric and operational parameters that affect the performance of a cyclone separator, including the geometry and the length of the vortex within the cyclone. In this work, a Computational Fluid Dynamics calculation is presented to predict the cyclone performance and flow field of a new cyclone separator. The simulation was realized using Reynolds Stress Model (RSM) for the turbulent model and the Discrete Phase Model (DPM) for particle trajectories. The Rosin–Rammler method is used in numerical simulations to apply Particle Size Distribution (PSD). The velocity fluctuations are simulated using the Discrete Random Walk (DRW) method. Simulation results show that the reduced vortex finder diameter causes an increase in tangential velocity and collection efficiency but at the cost of pressure drop. It is also found that increasing the length of the vortex limiter will decrease the tangential velocity and decrease the pressure drop but can improve the collection efficiency. Results obtained that geometrical parameter influenced the performance of the new cyclone separator.
