Influence of tip clearance on pressure fluctuations in an axial flow pump

详细信息    查看全文

• 作者：Jianjun Feng ; Xingqi Luo ; Pengcheng Guo…
• 关键词：Axial ; flow pump ; Tip clearance ; Computational fluid dynamics ; Rotor ; stator interaction ; Pressure fluctuation
• 刊名：Journal of Mechanical Science and Technology
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：30
• 期：4
• 页码：1603-1610
• 全文大小：3,250 KB
• 参考文献：[1]H. X. Wu, R. L. Miorini and J. Katz, Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump, Experiments in Fluids, 50 4 (2011) 989–1003.CrossRef
  [2]W. C. Zierke, W. A. Straka and P. D. Taylor, Experimental investigation of the flow through an axial-flow pump, Journal of Fluids Engineering, 117 3 (1995) 485–490.CrossRef
  [3]W. C. Zierke, K. J. Farrell and W. A. Straka, Measurements of the tip clearance flow for a high-Reynolds-number axial flow rotor, ASME Journal of Tubomachinery, 117 4 (1995) 522–532.CrossRef
  [4]D. S. Zhang et al., Numerical investigation of blade dynamic characteristics in an axial flow pump, Thermal Science, 17 5 (2013) 1511–1514.CrossRef
  [5]D. S. Zhang et al., Study on tip leakage vortex in an axial flow pump based on modified shear stress transport k-w turbulence model, Thermal Science, 17 5 (2013) 1551–1555.CrossRef
  [6]R. Dong, S. Chu and J. Katz, Effect of modification to tongue and impeller geometry on unsteady flow, pressure fluctuations, and noise in a centrifugal pump, Journal of Turbomachinery, 119 3 (1997) 506–515.CrossRef
  [7]K. A. Kaupert and T. Staubli, The unsteady pressure field in a high specific speed centrifugal pump impeller-part 1: influence of the volute, Journal of Fluids Engineering, 121 3 (1999) 621–626.CrossRef
  [8]Q. R. Si, J. P. Yuan and S. Q. Yuan, Numerical investigation of pressure fluctuation in centrifugal pump volute based on SAS model and experimental validation, Advances in Mechanical Engineering, 2014 (2014) Article ID 972081, 12.
  [9]W. Qin and H. Tsukamoto, Theoretical study of pressure fluctuations downstream of a diffuser pump impeller-part 1: fundamental analysis on rotor-stator interaction, Journal of Fluids Engineering, 119 3 (1997) 647–652.CrossRef
  [10]H. Wang and H. Tsukamoto, Fundamental analysis on rotor stator interaction in a diffuser pump by vortex method, Journal of Fluids Engineering, 123 4 (2001) 737–747.CrossRef
  [11]H. Wang and H. Tsukamoto, Experimental and numerical study of unsteady flow in a diffuser pump at off-design conditions, Journal of Fluids Engineering, 125 5 (2003) 767–778.CrossRef
  [12]F. Shi and H. Tsukamoto, Numerical study of pressure fluctuations caused by impeller-diffuser interaction in a diffuser pump stage, Journal of Fluids Engineering, 123 3 (2001) 466–474.CrossRef
  [13]J. Feng, F.-K. Benra and H. J. Dohmen, Numerical investigation on pressure fluctuations for different configurations of vaned diffuser pumps, International Journal of Rotating Machinery, 2007 (2007) Article ID:34752, 10.
  [14]D. Zhang et al., Unsteady flow analysis and experimental investigation of axial-flow pump, Journal of Hydrodynamics, 22 1 (2010) 35–43.CrossRef
  [15]Z. J. Shuai et al., Numerical study on the characteristics of pressure fluctuations in an axial-flow water pump, Advances in Mechanical Engineering, 2014 (2014) Article ID 565061, 7.
  [16]C. Kang et al., Influence of stator vane number on performance of the axial-flow pump, Journal of Mechanical Science and Technology, 29 5 (2015) 2025–2034.CrossRef
  [17]B. Ji, X. W. Luo and Y. L. Wu, Unsteady cavitation characteristics and alleviation of pressure fluctuations around marine propellers with different skew angles, Journal of Mechanical Science and Technology, 28 4 (2014) 1339–1348.CrossRef
  [18]F. R. Menter, Two-equation eddy-viscosity turbulence models for engineering applications, AIAA-Journal, 32 8 (1994) 1598–1605.CrossRef
  
• 作者单位：Jianjun Feng (1)
  Xingqi Luo (1)
  Pengcheng Guo (1)
  Guangkuan Wu (1)
  
  1. State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an, 710048, China
  
• 刊物类别：Engineering
• 刊物主题：Mechanical Engineering
  Structural Mechanics
  Control Engineering
  Industrial and Production Engineering
  
• 出版者：The Korean Society of Mechanical Engineers
• ISSN：1976-3824

文摘

Rotor-stator interaction in axial pumps can produce pressure fluctuations and further vibrations even damage to the pump system in some extreme case. In this paper, the influence of tip clearance on pressure fluctuations in an axial flow water pump has been investigated by numerical method. Three-dimensional unsteady flow in the axial flow water pump has been simulated with different tip clearances between the impeller blade tip and the casing wall. In addition to monitoring pressure fluctuations at some typical points, a new method based on pressure statistics was proposed to determine pressure fluctuations at all grid nodes inside the whole pump. The comparison shows that the existence of impeller tip clearance magnifies the pressure fluctuations in the impeller region, from the hub to shroud. However, the effect on pressure fluctuation in the diffuser region is not evident. Furthermore, the tip clearance vortex has also been examined under different tip clearances.