International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

Control of Pump Performance with Attaching Flaps on Blade Trailing Edges

  • Kanemori, Yuji (Research and development Department, Torishima Pump MFG. co., Ltd.) ;
  • Pan, Ying Kang (Research and development Department, Torishima Pump MFG. co., Ltd.)
  • Received : 2008.07.04
  • Accepted : 2008.09.29
  • Published : 2008.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

An innovative method of changing a centrifugal low specific speed pump performance and pressure fluctuation by applying outlet flaps to impeller exit has been investigated. The outlet blade edge section corresponds to the trailing edge of wing on the circular-cascade, which dominates the pump performance and pressure fluctuation. Computational fluid dynamics (CFD) analysis of the entire impeller and volute casing and an experimental investigation are conducted. The pressure fluctuation and the vibration of the shaft are measured simultaneously. Kurtosis is applied as a dimensionless parameter with which the unevenness of velocity distribution at impeller outlet is indicated. The influence of the flaps on the pressure fluctuation is explained by the kurtosis. This paper presents a theoretical method of predicting the pump performance related to the attachment of a flap at impeller outlet.

Keywords

References

  1. Abbott.I.H. et al., 1959, “Theory of Wing Sections,” p188，Dover Publications, INC.，McGraw–Hill.
  2. Kanemori, Y., and Pan, Y., K., 2005,” Pump Performance Relative to Different Impeller Exit Blade Shapes,” TurbomachinerySociety of Japan, Vol. 33, No. 10, pp. 629-636. (in Japanese)
  3. Cooper, P., et al., 1994, “Computational Fluid Dynamical Analysis of Complex Internal Flows in CentrifugalPumps,” Proceedings on the 11th. International Pump Users Symposium, pp. 83-94.
  4. Majidi, K, 2005, “Numerical Study of Unsteady Flow in Centrifugal Pumps,” Trans. ASME Journal of Turbo-machinery, Vol. 127, pp. 363-371. https://doi.org/10.1115/1.1776587
  5. Strackeljan, J., etal. 1996, “Condition monitoring of rotating machinery using a fuzzy pattern recognition algorithm,”C500/049/96,IMechE,6th.Inter. Conf. on Vib. in Rot. Machinery, pp. 507.
  6. Kurokawa, j.,, et al., 2000, “ Study on Optimum Configuration of a Volute Pump of Very Low Specific Speed,” Transactionsof the Japan Society of Mechanical Engineers, Series B, Vol. 66, No. 644, pp. 1132-1139. (in Japanese) https://doi.org/10.1299/kikaib.66.1132
  7. Wiesner.F.J., 1967, “a Review of Slip Factors for Considering Impellers,” Trans. ASME, Ser.A, 89-4, pp. 558.
  8. Ohashi, H., 1967, “Research on dynamic characteristic of turbo pump, “ Transactions of the Japan Society of MechanicalEngineers, Series B, Vol. 33, No. 255, pp. 1789-1779. (in Japanese) https://doi.org/10.1299/kikai1938.33.1789
  9. Oono, T., et al., 1985, “Experimental Study of Pressure Fluctuation of Double Suction Centrifugal Pump,” TurbomachinerySociety of Japan, Vol. 13, No. 2 , pp. 21-29. (in Japanese)
  10. Maruta, Y., 1998, “Forecast and Prevention of Pump Noise,” Turbomachinery Society of Japan, Vol. 26, No. 2 , pp. 42-49.(in Japanese)
  11. Iino, T., and Kasai, K.,,1985, “An Analysis of Unsteady Flow induced by Interaction Between a Centrifugal Impeller and aVaned Diffuser, ” Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 51, No. 471, pp. 3748-3753. (inJapanese) https://doi.org/10.1299/kikaib.51.3748
  12. Guo, S., et al., 2005, “Measurement on the Fluid Forces Induced by Rotor-Stator Interaction in a Centrifugal Pump,”Transactions of the Japan Society of Mechanical Engineers, Series B, Vol. 71, No. 706, pp. 1603-1610. (in Japanese) https://doi.org/10.1299/kikaib.71.1603
  13. Arndt, N., et al., 1989, “Rotor-Stator Interaction in a Diffuser Pump,” Trans.ASME Journal of Turbo-machinery, Vol. 111, pp. 213-221. https://doi.org/10.1115/1.3262258
  14. Arndt, N., et al., 1990, “Experimental Investigation of Rotor-Stator Interaction in a Centrifugal Pump with Several Vaned Diffusers,” Trans.ASME Journal of Turbo-machinery, Vol. 112, pp. 98-108. https://doi.org/10.1115/1.2927428
  15. Kanemori, Y., 2008, JP Patent No. P4065872.