Numerical Analysis on the Influence of Rotation Speed on the Flow Field Within Dynamic Hydroclone

The computational fluid dynamics method is utilized to simulate flow fields within dynamic hydrocyclone which operates with different rotation speeds,and to analyze the impact of rotation speed on the three aspects of the interior flow filed,including the internal flow static pressure distribution,tangential velocity and turbulent kinetic energy distribution.In calculation Reynolds stress model and mixer model are used.The results show that rotation speeds have a huge impact on the distribution and values of the tangential velocity intensity and static pressure.The turbulent kinetic energy is obviously affected by rotation speed near rotating-bar and is weakened in the second half of rotation cylinder.An appropriate increase of rotation speed even can inhibit the turbulence of dynamic hydrocyclone.