Unsteady Flow Characteristics of Mixed-flow Pumps with Splitter Blades

被引：0
作者：
Zhang X. [1 ]
Wang P. [2 ]
Ruan X. [1 ]
机构：
[1] State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou
[2] Zigong Innovation Center of Zhejiang University, Zigong
来源：
Wang, Pengfei (wangpf@zucc.edu.cn) | 1600年 / Chinese Society of Agricultural Machinery卷 / 52期
关键词：
Fluid-solid interaction; Mixed-flow pump; Pressure pulsation; Splitter blades; Unsteady flow;
D O I：
10.6041/j.issn.1000-1298.2021.11.016
中图分类号：
学科分类号：
摘要：
In order to study the influence of splitter blades on the performance of mixed-flow pumps with the effects of fluid-solid interaction, a certain type of mixed-flow pump with large flow was used as the research object, and the two-way fluid-solid interaction coupling method with dynamic mesh deformation was used. The influence of the presence of splitter blades on the unsteady pressure fluctuations and the resulting structural dynamic characteristics of the mixed-flow pump were studied. It was found that the presence of splitter blades greatly reduced the maximum value of pressure fluctuation amplitude which was induced by rotor stator interaction. However, the presence of splitter blades had an effect of reducing the rate of fluctuation dissipation. The splitter blades had little influence on the average value of the axial force. When the effects of fluid-solid interaction were considered, the average value of axial force was reduced and there were fluctuations. Besides, the presence of splitter blades had an effect of reducing the fluctuation amplitude of total stress and deformation. The maximum stress area occurred in the intersection of the blade and the hub/shroud. The maximum stress of the blade was reduced by the presence of splitter blades, and the stress gradient was reduced, resulting a more uniform stress distribution. The blade deformation was more uniform in the circumferential direction due to the presence of splitter blades, and the eccentricity of the deformation distribution was reduced. The research results could provide some references for the optimal design of the mixed-flow pump. © 2021, Chinese Society of Agricultural Machinery. All right reserved.
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页码：153 / 160
页数：7
相关论文
共 25 条
  • [1] CUI Baoling, FANG Chen, GE Mingya, Internal flow characteristics and performance test of low specific-speed centrifugal pumps, Journal of Drainage and Irrigation Machinery Engineering, 34, 5, pp. 375-380, (2016)
  • [2] SHI Peiqi, CUI Baoling, CHEN Jieda, Et al., The simulation of internal flow field in low-specific-speed centrifugal pump, Journal of Zhejiang Sci-Tech University, 29, 4, pp. 575-579, (2012)
  • [3] LI Yaojun, WANG Fujun, Numerical investigation of performance of an axial-flow pump with inducer, Journal of Hydrodynamics, 19, 6, pp. 705-711, (2007)
  • [4] XU Han, JIN Donghai, SUN Dakun, Et al., Effect of rotor-stator axial spacing on the pressure-rise performance and flow field in an axial pump, Proceedings of the Institution of Mechanical Engineers, 233, 6, pp. 727-737, (2019)
  • [5] LI Deyou, WANG Hongjie, WEI Xianzhu, Et al., Analysis of rotor-stator interaction in turbine mode of a pump-turbine model, Journal of Applied Fluid Mechanics, 9, 5, pp. 2559-2568, (2016)
  • [6] ZHANG Wenwu, CHEN Zhenmu, ZHU Baoshan, Et al., Pressure fluctuation and flow instability in S-shaped region of a reversible pump-turbine[J], Renewable Energy, 154, pp. 826-840, (2020)
  • [7] POSA A, LIPPOLIS A, BALARAS E., Large-eddy simulation of a mixed-flow pump at off-design conditions, Journal of Fluids Engineering, 137, 10, pp. 1-10, (2015)
  • [8] PENG Xiaona, ZHU Xiangyuan, LI Guojun, Et al., Numerical prediction of clock effect of diffuser in volute on blade loading in centrifugal pump, Journal of Drainage and Irrigation Machinery Engineering, 37, 3, pp. 192-198, (2019)
  • [9] YANG Ailing, LANG Dapeng, LI Guoping, Et al., Numerical research about influence of blade outlet angle on flow-induced noise and vibration for centrifugal pump, Advances in Mechanical Engineering, 2014, (2014)
  • [10] DONG Liang, DAI Cui, KONG Fanyu, Et al., Flow-induced noise characteristic and contribution to interior noise for centrifugal pump as turbine, Journal of Mechanical Engineering, 52, 18, pp. 184-192, (2016)
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