Simulation of cyclone separator using multiphase particle in cell method based on particle energy dissipation model

This paper presents a particle energy dissipation model for multiphase particles in cell method (MP-PIC), which is used to describe the clustering behavior of particles due to energy dissipation during particle collisions. The numerical predictions of gas-particle dynamical behaviors in a cyclone separator with this model showed that the model proposed here is capable of making accurate predictions of the flow behaviors, and the numerical results agreed well with the experimental ones. A negative pressure area was detected at the center of the cyclone separator, while a high pressure area was found near the wall surface. The gas phase field had a double-helix structure with the same rotation direction, but different flow directions between the outer-layer and central domain were apparent. Most of the particles were entrained to the wall surface, where they accumulated and clustered, and this resulted in better separations. Result of the simulations also showed that the diameter of the particle separation within the cyclone separator was 1×10^-5 m at the present operating conditions.