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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

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.

Keywords

References

  1. Suzuki, M., 2006, "Design Method of Guide Vane for Wells Turbine," Journal of Thermal Science, Vol. 15, No. 2, pp. 126-131. https://doi.org/10.1007/s11630-006-0126-3
  2. Ikui, T., Inoue, M., Kaneko, K., 1971, "Two-Dimensional Cascade Performance of Circular-Arc Blades," Proceedings of Tokyo Joint International Gas Turbine Conference and Products Show, JSME-9, pp. 57-64.
  3. Suzuki, M., 2006, "Investigation into Accuracy of CFD for Flow around Isolated Airfoil," Turbomachinary, Vol. 34, No. 6, pp. 366-373 (in Japanese).
  4. Peric, M., Kessier, R., Scheuerer, G., 1988, "Comparison of Finite-Volume Numerical Methods with Staggered and Collocated Grids," Computers & Fluids, Vol. 16, No. 4, pp. 389-403. https://doi.org/10.1016/0045-7930(88)90024-2
  5. Rhie, C. M. and Chow, W. L., 1983, "Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation," AIAA Journal, Vol. 21, No. 11, pp. 1525-1532. https://doi.org/10.2514/3.8284
  6. Patankar, S. V., 1980, "Numerical Heat Transfer and Fluid Flow," McGraw-Hill, New York.
  7. Leonard, B. P., 1979, "A Stable and Accurate Convective Modelling Procedure Based on Quadratic Upstream Interpolation," Computer Methods in Applied Mechanics and Engineering, 19, pp. 59-98. https://doi.org/10.1016/0045-7825(79)90034-3
  8. Launder, B.E., Sharma, B.I., 1974, "Application of the Energy-Dissipation Model of Turbulence to the Calculation of Flow near a Spinning Disk," Letters in Heat Mass Transfer, Vol. 1, pp. 131-138.
  9. Kato, M., Launder, B. E., 1993, "The modeling of turbulent flow around stationary and vibrating square cylinder," Proceedings of 9th Symposium Turbulent Shear Flows, Kyoto, Paper 10-4.

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