International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
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Prediction of Cascade Performance of Circular-Arc Blades with CFD

  • Suzuki, Masami (Department of Mechanical Engineering, Graduate School of Engineering, The University of Tokyo) ;
  • Setoguchi, Toshiaki (Institute of Ocean Energy, Saga University) ;
  • Kaneko, Kenji (Department of Mechanical Engineering, Saga University)
  • Received : 2009.12.25
  • Accepted : 2011.08.13
  • Published : 2011.12.31
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Abstract

Thin circular-arc blade is often used as a guide vane, a deflecting vane, or a rotating blade of low pressure axial-flow turbomachine because of its easy manufacture. Ordinary design of the blade elements of these machines is done by use of the carpet diagrams for a cascade of circular-arc blades. However, the application of the carpet diagrams is limited to relatively low cambered blade operating under optimum inlet flow conditions. In order to extend the applicable range, additional design data is necessary. Computational fluid dynamics (CFD) is a promising method to get these data. In this paper, two-dimensonal cascade performances of circular-arc blade are widely analyzed with CFD. The results have been compared with the results of experiment and potential theory, and useful information has been obtained. Turning angle and total pressure loss coefficients are satisfactorily predicted for lowly cambered blade. For high camber angle of $67^{\circ}$, the CFD results agree with experiment for the angle of attack less than that for shockless inlet condition.

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References

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Cited by

  1. Flow loss and structure of circular arc blades with different leading edges vol.10, pp.1, 2018, https://doi.org/10.1177/1687814017732895