Study on the Influence of Inlet Particles on the Wall Erosion of Cyclone Desander
Based on the computational fluid dynamics method,the Reynolds stress model and the particle random trajectory model in Fluent software were used to select the common operating state of the cyclone desander.The numerical simulation was used to study the inlet velocity of the particles at 5～15 m/s and the mass concentration at 10～30 kg/m3.The influence of the change on the wall erosion of the cyclone desander was obtained,and the erosion distribution law of the inner wall of the cyclone desander was obtained.The simulation results show that the wall erosion distribution of the cyclone desander is not uniform,and the erosion rate near the inlet annular space and the underflow port is large.The change of inlet velocity and particle mass concentration has little effect on the overall distribution of wall erosion of the cyclone desander,but the change of inlet velocity will change the position of the most severe erosion point in each erosion area.The change in wall erosion position in the inlet annular space is most obvious,while the change in particle mass concentration has little effect on the position of the most severe erosion point.The increase in particle inlet velocity and mass concentration will increase the maximum erosion rate of the cyclone desander,and the effect of inlet velocity on the maximum erosion rate of the cyclone desander is greater than that of mass concentration.
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