입형 다단 원심펌프 유동특성에 관한 연구

A commercial CFD code is applied to analyze the 3-D viscous flow field within vertical multi-stage centrifugal pump including impeller of centrifugal pump with 6 blades and guide vane with 11 blades. The numerical analysis of vertical multi-stage centrifugal pump is performed by changing flow rate from 10 to 26 ㎥/h at the constant 3500rpm. The characteristics such as total pressure coefficient, total head shaft horse power, power efficiency, discharge coefficient are represented according to flow rate changing. the Vertical multi - stage pump consist of the impeller, guide vane, and cylinder. the grid of numerical analysis used in the Vertical multi - stage pump is 18000, 450000 and 100000 cells in case of impeller, guide vane, cylinder each other, and total grid is 730000 cells In the future, we will need to perform flow calculation of vertical multi-stage centrifugal pump by considering meridional shape of guide vane.