High-efficiency design of a mixed-flow pump  

作　　者：KIM Jin-Hyuk AHN Hyung-Jin KIM Kwang-Yong 

机构地区：[1]Department of Mechanical Engineering,Inha University,253,Yonghyun-Dong,Incheon,402-751,Republic of Korea [2]Industrial Machinery Division,Iljin Electric Co.,Ltd,5-5,Hwasu-Dong,Incheon,401-020,Republic of Korea

出　　处：《Science China(Technological Sciences)》2010年第1期24-27,共4页中国科学（技术科学英文版）

基　　金：supported by the Korea Institute of Industrial Technology Evaluation and Planning (ITEP) grant funded by the Ministry of Knowledge Economy (Grant No.10031771)

摘　　要：High-efficiency design of a mixed-flow pump has been carried out based on numerical analysis of a three-dimensional viscous flow.For analysis,the Reynolds-averaged Navier-Stokes equations with a shear stress transport turbulence model were discretized by finite-volume approximations.Structured grid system was constructed in the computational domain,which has O-type grids near the blade surfaces and H/J-type grids in other regions.The numerical results were validated with experimental data for the heads and hydraulic efficiencies at different flow coefficients.The hydraulic efficiency at the design flow coefficient was evaluated with variation of the geometric variables,i.e.,the area of the discharge and length of the vane in the diffuser.The result has shown that the hydraulic efficiency of a mixed-flow pump at the design condition is improved by the modification of the geometry.High-efficiency design of a mixed-flow pump has been carried out based on numerical analysis of a three-dimensional viscous flow.For analysis,the Reynolds-averaged Navier-Stokes equations with a shear stress transport turbulence model were discretized by finite-volume approximations.Structured grid system was constructed in the computational domain,which has O-type grids near the blade surfaces and H/J-type grids in other regions.The numerical results were validated with experimental data for the heads and hydraulic efficiencies at different flow coefficients.The hydraulic efficiency at the design flow coefficient was evaluated with variation of the geometric variables,i.e.,the area of the discharge and length of the vane in the diffuser.The result has shown that the hydraulic efficiency of a mixed-flow pump at the design condition is improved by the modification of the geometry.

关 键 词：mixed-flow PUMP numerical analysis IMPELLER VANE DIFFUSER HEAD HYDRAULIC efficiency 

分 类 号：TH38[机械工程—机械制造及自动化]