The flow field in FTW turbine classifier is studied by using simulation of the dynamic pressure

the turbulent kinetic energy

velocities using computational fluid dynamics software Fluent. Effects of feeding rate on the inner flow field were compared and analyzed. The results showed that when the feeding rate increases

the dynamic pressure is reduced while its distribution is symmetrical. The turbulent kinetic energy is reduced with more uniform distribution and increased radial velocity

decreased tangential velocity and decreased axial velocity. The greater impact on the flow field is the larger axial velocity favorable for stable classifying. Experimental measurement of particle size distribution verified some of the above results.