旋风分离器的气相流场的性能分析及数值模拟

Performance Analysis and Numerical Simulation of Gas Flow Field in Cyclone

采用CFD的专业软件FLUENT对旋风分离器的分离效率进行仿真计算。通过对旋风分离器内气相流场的模拟,观察其速度云图得出,在旋风分离器中心区域有一明显的气芯柱,且切向速度和轴向速度都具有较好的轴对称性;通过改变控制参数研究旋风分离器的分离效率,得出的结论是:当增大入口气体流量、提高颗粒相浓度将有利于提高旋风分离器的分离性能,粒径较大的颗粒分离效果较好。

This paper uses CFD professional software FLUENT to simulate and calculate the separation efficiency of cyclone separa-tor. In the gas phase flow field simulation, the speed cloud chart is observed. The gas core column obviously exists in the cyclone separator area center and the tangential and axial velocities have good symmetry; Through changing the control parameters of its separation efficiency, it comes to the conclusion that when the inlet gas flow rate is improved and the grain phase concentration is in-creased, it helps the cyclone separator to improve its separation performance, especially, larger particle size.