Numerical Study of Vortex Flow in a Classifier with Coaxial Tubes

Centrifugal air classifiers are one of the most used separation devices in particle technology. The study aims to obtain a detailed description bulk material classification mechanism developed centrifugal classifier. classifier design and stable vortex structure formation inter-tube space device described. Velocities within between vortices studied identify regions with inverse flows, which serve as transport channels for particles. computational fluid dynamics modeling results indicate three negative or near-zero axial velocities: vortices, near outer wall internal tube, inner external tube. selectivity decreases when disrupted due flow mixing, is caused by height shifting centers.