Journal of Mechanical Science and Technology

, Volume 31, Issue 4, pp 1561–1568 | Cite as

Dynamic stress of impeller blade of shaft extension tubular pump device based on bidirectional fluid-structure interaction

  • Kan Kan
  • Yuan Zheng
  • Shifeng Fu
  • Huiwen Liu
  • Chunxia Yang
  • Xin Zhang


Current research on the stability of tubular pumps is mainly concerned with the transient hydrodynamic characteristics. However, the structural response under the influence of fluid-structure interaction hasn’t been taken fully into consideration. The instability of the structure can cause vibration and cracks, which may threaten the safety of the unit. We used bidirectional fluid-structure interaction to comprehensively analyze the dynamic stress characteristics of the impeller blades of the shaft extension tubular pump device. Furthermore, dynamic stress of impeller blade of shaft extension tubular pump device was solved under different lift conditions of 0° blade angle. Based on Reynolds-average N-S equation and SST k-ω turbulence model, numerical simulation was carried out for three-dimensional unsteady incompressible turbulent flow field of the pump device whole flow passage. Meanwhile, the finite element method was used to calculate dynamic characteristics of the blade structure. The blade dynamic stress distribution was obtained on the basis of fourth strength theory. The research results indicate that the maximum blade dynamic stress appears at the joint between root of inlet side of the blade suction surface and the axis. Considering the influence of gravity, the fluctuation of the blade dynamic stress increases initially and decreases afterwards within a rotation period. In the meantime, the dynamic stress in the middle part of inlet edge presents larger relative fluctuation amplitude. Finally, a prediction method for dynamic stress distribution of tubular pump considering fluid-structure interaction and gravity effect was proposed. This method can be used in the design stage of tubular pump to predict dynamic stress distribution of the structure under different operating conditions, improve the reliability of pump impeller and analyze the impeller fatigue life.


Shaft extension tubular pump Impeller blade Bidirectional fluid-structure interaction Gravity effect Dynamic stress distribution 


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  1. [1]
    J. Pei, S. Q. Yuan and J. P. Yuan, Dynamic stress analysis of sewage centrifugal pump impeller based on two-way coupling method, Chinese J. of Mechanical Engineering, 2 (2014) 369–375.CrossRefGoogle Scholar
  2. [2]
    R. F. Xiao, Z. W. Wang and Y. Y. Luo, Dynamic stress analysis of Francis turbine with partial load, J. of Hydroelectric Engineering, 26 (4) (2007) 130–134.Google Scholar
  3. [3]
    R. L. Campbell and G. Paterson, Fluid-structure interaction analysis of flexible turbomachinery, J. of Fluids and Structures, 27 (8) (2011) 1376–1391.CrossRefGoogle Scholar
  4. [4]
    M. A. Langthiem and N. A. Olhoff, Numerical study of flow-induced noise in a two-dimensional centrifugal pump, part I: hydrodynamics, J. of Fluids and Structures, 19 (3) (2004) 349–368.CrossRefGoogle Scholar
  5. [5]
    C. Allison et al., Experimental validation of empirical methods for dynamic stress prediction in turbomachinery blades, ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, v 6, PARTS A AND B (2011) 121–131.Google Scholar
  6. [6]
    J. Y. Gao et al., Dynamic stress of large double-suction centrifugal pump impeller, Chinese Society of Agricultural Machinery, 43 (1) (2012) 42–47, 52.Google Scholar
  7. [7]
    H. Lerche et al., Dynamic stress prediction in centrifugal compressor blades using fluid structure interaction, ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, 6 (2012) 191–200.CrossRefGoogle Scholar
  8. [8]
    H. Charles, Numerical computation of internal and external flows, Wiley, Oxford, UK (2007).Google Scholar
  9. [9]
    V. Prasad, Numerical simulation for flow characteristics of axial flow hydraulic turbine runner, Energy Procedia, 14 (2012) 2060–2065.CrossRefGoogle Scholar
  10. [10]
    J. Pei, H. J. Dohmen and S. Q. Yuan, Investigation of unsteady flow-induced impeller oscillations of a single-blade pump under off-design conditions, J. of Fluids and Structures, 35 (2012) 89–104.CrossRefGoogle Scholar
  11. [11]
    F. Jing, G. Xiao and Z. Xiong, Calculation method of fluid and structure interaction in a vertical-axis tidal current turbine, J. of Vibration and Shock, 32 (8) (2013) 91–95, 104.Google Scholar
  12. [12]
    Y. Wang et al., Strength analysis on stamping and welding impeller in centrifugal pump based on fluid-structure interaction theorem, Transactions of the Chinese Society of Agricultural Engineering, 27 (3) (2011) 131–136.Google Scholar
  13. [13]
    Q. Zhang and H. Toshiaki, Studies of the strong coupling and weak coupling methods in FSI analysis, International J. for Numerical Methods in Engineering, 60 (12) (2004) 2013–2029.CrossRefMATHGoogle Scholar
  14. [14]
    H. Schmucker, F. Flemming and S. Coulson, Two-way coupled fluid structure interaction simulation of a propeller turbine, IOP Conference Series: Earth and Environmental Science (2010) 152–159.Google Scholar
  15. [15]
    G. Peng et al., Strength analysis of a large centrifugal dredge pump case, Engineering Failure Analysis, 16 (1) (2009) 321–328.MathSciNetCrossRefGoogle Scholar
  16. [16]
    R. A. Saeed and A. N. Galybin, Simplified model of the turbine runner blade, Engineering Failure Analysis, 16 (7) (2009) 2473–2484.CrossRefGoogle Scholar
  17. [17]
    J. Yang, S. Preidikman and E. Balaras, A strongly coupled, embedded-boundary method for fluid-structure interactions of elastically mounted rigid bodies, J. of Fluids and Structures, 24 (2) (2008) 167–182.CrossRefGoogle Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Kan Kan
    • 1
  • Yuan Zheng
    • 2
    • 3
  • Shifeng Fu
    • 4
  • Huiwen Liu
    • 1
  • Chunxia Yang
    • 3
  • Xin Zhang
    • 4
  1. 1.College of Water Conservancy and Hydropower EngineeringHohai UniversityNanjingChina
  2. 2.National Engineering Research Center of Water Resources Efficient Utilization and Engineering SafetyNanjingChina
  3. 3.College of Energy and Electrical EngineeringHohai UniversityNanjingChina
  4. 4.Power China Huadong Engineering CorporationHangzhouChina

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