The simulation of the flow within a hydrocyclone operating with an air core and with an inserted metal rod

摘要

The simulations of the flow within the solid-liquid hydrocyclone operating with an air core and with an inserted metal rod were performed.Finite-volume method and Reynolds stresses model(RSM)were used to model the turbulence characteristic of the flow.The computational results demonstrate the double-vortex flow,which depict the two separation flows.The low-pressure zone or the air core in the centre core was simulated.The redesign hydrocyclone for reducing the energy loss due to this low-pressure core was done by inserting the metal rod in the middle of hydrocyclone.The effect of the inserted-rod on the velocity distributions and the separation performance was investigated.It was found that the separation performance can only be improved with the proper size of the inserted-rod.