By applying the theory of computational fluid dynamics and two phases coupling, and aimed on complexity of interior two phase flow of dust collector cyclone, the mathematics' model is established and the numerical simulation for interior two phase flow of dust collector cyclone found some helpful results. The velocity, pressure and moving locus of granule laws of dust collector cyclone height are found. The results show there is enough improving space on tangential velocity, axial velocity, radial velocity, static pressure, dynamic pressure and total pressure of usual high-effective dust collector cyclone. The interior surface wastage intensifies with reducing of granule diameter. And efficiency of dust collector is not enough. Therefore, the design of a new type dust collector cyclone which accord with flow character is achieved. The tangential velocity of improved dust collector cyclone is more than of dust collector cyclone which is not improved. The distributing of static pressure reduce in central zone of the improved dust collector cyclone is less than of the unchanged dust collector cyclone in the separated space. The total pressure of corresponding position increase in the improved collector more than in the unchanged collector. The numerical simulation results indicate flow character of new type dust collector cyclone improved much. The works could provide reference on design and research on interior two phase flow of dust collector cyclone.
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