排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2019, Vol. 37 Issue (5): 393-399    DOI: 10.3969/j.issn.1674-8530.17.0164
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Three-dimensional multi-parameter design and experiment of axial-flow pump impeller
YU Yunyun1,ZHOU Daqing1*,DAI Qifan2,LIANG Haojie2,ZHONG Ziye2
1. College of Energy & Electrical Engineering, Hohai University, Nanjing, Jiangsu 211100, China; 2. Main Irrigation Channel Management Division of Jiangsu Province, Huaian, Jiangsu 223200, China
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Abstract To solve the design problem of the axial-flow pump in a pumping station refurbishment projection in the South to North Water Diversion East Route, three-dimensional(3D)multi-parameter design of an axial-flow pump impeller was carried out by using BladeGen software. The whole axial-flow pump geometric model with designed impellers was established, and a structured mesh in the fluid domain was generated. The influences of design parameters of the impeller on the pump external hydraulic performance were analyzed through numerical simulations. Furthermore, the effects of a dominant parameter i.e., blade wrapping angle on pressure and velocity distributions over the blades and cavitation performance were clarified in terms of three wrapping angle profiles. According to the numerical results, design case 6, in which the hub ratio was 0.40, the maximum section thickness in the mid-chord was 10mm, and the blade section was airfoil B, was chosen eventually. In this design case, the pump head was 4.90m, the pump efficiency with suction and discharge pipes was 79.76%, and the impeller efficiency was 92.19% at the design flow rate. These performance parameters has met the design requirements, and were consistent with the corresponding experimental measurements. Therefore, the BladeGen software could produce more accurate 3D multi-parameter designs for an axial-flow pump impeller to reduce both number of design cases and workload in geometry modeling during the optimization process, and result in an improved pump efficiency.
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YU Yun-Yun-
ZHOU Da-Qing-*
DAI Qi-Fan-
LIANG Hao-Jie-
ZHONG Zi-Ye-
Key wordsaxial-flow pump   impeller design   multi-parameter   BladeGen   model experiment     
Received: 2017-07-12;
Cite this article:   
YU Yun-Yun-,ZHOU Da-Qing-*,DAI Qi-Fan- et al. Three-dimensional multi-parameter design and experiment of axial-flow pump impeller[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(5): 393-399.
 
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