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Journal of Thermal Science

, Volume 14, Issue 2, pp 142–149 | Cite as

Pressure measurement on casing wall and blade rows interaction of contra-rotating axial flow pump

  • Toru Shigemitsu
  • Tomoya Takano
  • Akinori Furukawa
  • Kusuo Okuma
  • Satoshi Watanabe
Article

Abstract

An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. The blade rows interaction between front and rear rotors should be clarified for its stable operation and reduction of unsteady losses. In this paper, the static pressure distributions on casing wall are provided by measuring with the phase locked sampling method. The measurements are carried out for two types of the rear rotors with different blade number and chord length, and it is found that, for both types of rotors, the unsteady pressure fluctuations are more remarkable in the front rotor than in the rear rotor and they are caused by the rear rotor pressure field. The effects of pressure fluctuations will be discussed in more details toward understanding the blade rows interaction in the contra-rotating axial flow pump.

Keywords

turbomachinery contra-rotating rotor pressure field blade rows interaction 

CLC number

TK312 

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References

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Copyright information

© Science Press 2005

Authors and Affiliations

  • Toru Shigemitsu
    • 1
  • Tomoya Takano
    • 1
  • Akinori Furukawa
    • 1
  • Kusuo Okuma
    • 1
  • Satoshi Watanabe
    • 1
  1. 1.Division of Mechanical Engineering ScienceKyushu UniversityFukuokaJapan

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