关键词: 旋风分离器, 模型, 流体动力学, 激光多普勒

Abstract: The flowpatterns in the cyclone,both the tangential inlet cyclone and the swirl tube separator,were detected with and analysed by Laser Doppler Anemometry (LDA).The flow field distributions were achieved and the cylinder separation boundary between the inner and the outer vortex was figured out,and also the flowpatterns were simulated with Computational Fluid Dynamics (CFD) simulations.The model assumptions on the flowpattern in cyclones for predicting the separation performance were critiqued.i.e.,the representative models based on Barth model could be valuable for cyclone, and Rietema mainly can be used for swirl tubes.Next,the two different kinds of cyclones were tested for the separation performance.This paper reveals that the flowpattern in the conventional cyclone is better for the separation performance than in the swirl tube separator.

Key words: cyclone, separation model, CFD, LDA