Based on the CFD-DEM coupling method,a three-dimensional numerical model of an industrial-grade dynamic separator is established to investigate the detailed particle trajectory and powder classification mechanism inside the classifier,laying the foundation for subsequent optimization of the dynamic separator.The research results demonstrate that the airflow velocity is lower outside the rotor and higher inside the rotor of the powder classifier,providing an acceleration for particles to move towards the inside of the rotor.Coarse particles with larger diameters have higher mass and slower acceleration,resulting in insufficient velocity to pass through the moving blades when colliding with them.In contrast,fine particles with smaller diameters exhibit significant acceleration and have enough velocity to pass through the moving blades before collision.The key factor for the downward movement of coarse particles blocked by the rotor is the material-carrying capacity of the airflow,rather than solely relying on the gravity and kinetic energy loss of the particles themselves.
万方数据
维普
