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The vortex pump as a non-clogging pump with excellent performance , increasingly used in urban drainage , chemical, mining and other fields . Vortex pump design theory is not mature, less excellent hydraulic model . Vortex pump , which now focuses on the experimental and theoretical analysis . Through the experiment, the structural parameters of the vortex pump the cyclone pump performance , and then to correct the structural parameters of the vortex pump . The structural parameters of the design method by the experimental correction cyclone pump , spend a lot of material and human resources , and the design cycle is longer . With the development of computer technology and computational fluid dynamics , turbomachinery three-dimensional flow field have developed rapidly and has become one of the hotspots of the present stage . Application of CFD technology pump flow field numerical calculation , observation, analysis of the structure of the internal flow field , to predict the performance of the pump , the pump structure to optimize the design , pump design theory and design methods . This article Reynolds equations and standard k - epsilon turbulence model , Pro / E 3D modeling software for physical modeling , unstructured meshing , finite volume method, a first-order upwind scheme governing equations discretized using multi- phase reference system method to solve the flow field of dynamic and static interference and SIMPLE algorithm to solve the discrete equations vortex pump flow field numerical calculation and analysis of the the vortex pump impeller and pressurized water chamber velocity field , pressure field spin stream of the internal characteristics of the pump . Through numerical simulation, analysis of the the vortex pump import different blade shape , and pressurized water chamber shape of the vortex pump performance , and the following conclusions : 1. The cyclone pump inlet size of the vortex pump performance influence , the import size impeller diameter is about 0.45 , moderate vortex pump inlet velocity vortex pump performance ; 2 . were calculated tilt blades ( R30F30 ) equipped with two-way , one - way tilt blade ( R30 ) and straight leaf swirl pump flow field , R30 leaves the best performance , high efficiency wide area as good as R30F30 blades ; 3. radial size increases with the quasi- spiral vortex pump pressurized water chamber , poor performance . Head of the calculated and experimental values ??compared to 5 to 8 percentage points higher in low flow conditions around 5.2% , 7.8% more high flow conditions .
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