International Journal of Fluid Machinery and Systems

한국유체기계학회 (Korean Society for Fluid machinery)
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Internal Flow of a Two-Bladed Helical Inducer at an Extremely Low Flow Rate

  • Watanabe, Satoshi (Department of Mechanical Engineering, Kyushu University) ;
  • Inoue, Naoki (Graduate School of Engineering, Kyushu University) ;
  • Ishizaka, Koichi (Department of Mechanical Engineering, Kyushu University) ;
  • Furukawa, Akinori (Department of Mechanical Engineering, Kyushu University) ;
  • Kim, Jun-Ho (Hydro Research Part/R&D Center, Hyosung EBARA Co., Ltd.)
  • 투고 : 2010.04.02
  • 심사 : 2010.05.31
  • 발행 : 2010.06.01
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초록

The attachment of inducer upstream of main impeller is an effective method to improve the suction performance of turbopump. However, various types of cavitation instabilities are known to occur even at the designed flow rate as well as in the partial flow rate region. The cavitation surge occurring at partial flow rates is known to be strongly associated with the inlet back flow. In the present study, in order to understand the detailed structure of internal flow of inducer, we firstly carried out the experimental and numerical studies of non-cavitating flow, focusing on the flow field near the inlet throat section and inside the blade passage of a two bladed inducer at a partial flow rate. The steady flow simulation with cavitation model was also made to investigate the difference of flow field between in the cavitating and no-cavitating conditions.

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참고문헌

  1. Acosta, A. J., 1958, “An Experimental Study of Cavitating Inducers,” Proceedings of the Second Symposium on Naval Hydrodynamics, ONR/ACR-8, pp. 537-557.
  2. Kamijo, K., Yoshida, Y. and Tsujimoto, Y., 1993, “Hydraulic and Mechanical Performance of LE-7 LOX Pump Inducer,” AIAA Journal of Propulsion and Power, Vol. 9, pp. 819-826. https://doi.org/10.2514/3.23695
  3. Tsujimoto, Y., Yoshida, Y., Maekawa, Y., Watanabe, S. and Hashimoto, T., 1997, “Observations of Oscillating Cavitations of an Inducer,” ASME Journal of Fluids Engineering, Vol. 119, pp. 775-781. https://doi.org/10.1115/1.2819497
  4. Furukawa, A., Ishizaka, K. and Watanabe, S., 2002, “Flow Measurement in Helical Inducer and Estimate of Fluctuating Blade Force in Cavitation Surge Phenomena,” JSME International Journal, Ser.B, Vol. 45, No. 3, pp. 672-677. https://doi.org/10.1299/jsmeb.45.672
  5. Kim, J.-H., Ishizaki, M., Enomoto, N., Ishizaka, K., Watanabe, S. and Furukawa, A., 2008, “Suppression Effect of Upstream Installed Ring-shaped Obstacle Plate on Cavitation Surge in Pump Inducers,” Journal of Fluids Science and Technology, Vol. 3, No. 1, pp. 1-10. https://doi.org/10.1299/jfst.3.1
  6. Watanabe, S., Kim, J.-H., Ishizaka, K. and Furukawa, A., 2007. “Numerical/Experimental Investigations on Inlet Back Flow in a Helical Inducer in Partial Flow Conditions,” Proceedings of FEDSM2007, 5th Joint ASME/JSME Fluids Engineering Conference, FEDSM2007-37438. https://doi.org/10.1115/FEDSM2007-37438
  7. Lakshminarayana, B., 1982, “Fluid Dynamics of Inducers –A Review,” ASME Journal of Fluids Engineering, Vol. 104, pp. 411-427. https://doi.org/10.1115/1.3241874
  8. Yokota, K., Kurahara, K., Kataoka, D., Tsujimoto, Y. and Acosta, A. J., 1999, “A Study of Swirling Backflow and Vortex Structure at the Inlet of an Inducer,” JSME International Journal, Ser.B, Vol. 42, No. 3, pp. 451-459.
  9. Tsujimoto, Y., Horiguchi, H. and Qiao, X., 2005, “Backflow from Inducer and Its Dynamics,” Proceedings of 2005 ASME Fluids Engineering Division Summer Meeting and Exhibition, FEDSM2005-77381. https://doi.org/10.1115/FEDSM2005-77381