본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Cavitation Surge Suppression of Pump Inducer with Axi-asymmetrical Inlet Plate

Kim, Jun-Ho    (Hyosung Ebara Co. Ltd.   ); Ishzaka, Koichi    (Department of Mechanical Engineering, Kyushu University   ); Watanabe, Satoshi    (Department of Mechanical Engineering, Kyushu University   ); Furukawa, Akinori    (Department of Mechanical Engineering, Kyushu University  );
  • 초록

    The attachment of inducer in front of main impeller is a powerful method to improve cavitation performance. Cavitation surge oscillation, however, often occurs at partial flow rate and extremely low suction pressure. As the cavitation surge oscillation with low frequency of about 10 Hz occurs in a close relation between the inlet backflow cavitation and the growth of blade cavity into the throat section of blade passage, one method of installing an axi-asymmetrical plate upstream of inducer has been proposed to suppress the oscillation. The inlet flow distortion due to the axi-asymmetrical plate makes different elongations of cavities on all blades, which prevent the flow from becoming simultaneously unstable at all throat sections. In the present study, changes of the suppression effects with the axial distance between the inducer inlet and the plate and the changes with the blockage ratios of plate area to the cross-sectional area of inducer inlet are investigated for helical inducers with tip blade angles of $8^{\circ}$ and $14^{\circ}$ . Then a conceivable application will be proposed to suppress the cavitation surge oscillation by installing axi-asymmetrical inlet plate.


  • 주제어

    Turbomachinery .   Pump inducer .   Cavitation surge suppression .   Axi-asymmetrical inlet plate.  

  • 참고문헌 (11)

    1. Takamatsu, Y., Furukawa, A. and Ishizaka, K., 1984, “Method of Estimation of Required NPSH of Centrifugal Pump with Inducer,” Proc. 1st China-Japan Joint Conference on Hydraulic Machinery and Equipment, pp. 253-261. 
    2. Jacobsen, J. K., 1971, “Liquid Rocket Engine Turbo-pump Inducers,” NASA SP-8052. 
    3. Watanabe, T. and Kawata, 1978, “Y., Research on the Oscillations in Cavitating Inducer,” IAHR Joint Symp. on Design and Operation of Fluid Machinery, pp. 265-274. 
    4. Tsujimoto, Y., et al., 1997, “Observation of Oscillating Cavitation of an Inducer,” Trans. ASME, J. Fluids Eng., Vol. 119, pp. 775-781. 
    5. Yoshida, Y., Tsujimoto, Y., Kataoka, D., Horiguchi, H, and Wahl, F., 2001, “Effects of Leading Edge Cutback on Unsteady Cavitation in 4-Bladed Inducers,” ASME J. Fluids Eng., Vol. 123, pp. 762-770. 
    6. Kamijo, K., Yoshida, M. 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. 
    7. Kurokawa, J., Imamura, H., Choi, Y.-D., Ito, M. and Kikuchi, M., 2005, “Suppression of Cavitation in Inducer by J-Grooves,” (in Japanese), Turbomachinery(TSJ), 33-10, 592-600. 
    8. Kim, J.-H., Ishizaka, K., et al., 2008, “Suppression Effect of Upstream Installed Ring-Shaped Obstacle Plate on Cavitation Surge in Pump Inducers,” J. of Fluids Science and Technology, JSME, Vol. 3, No. 1, pp. 1-10. 
    9. Furukawa, A., Ishizaka, K. and Watanabe, S., 2002, “Flow Measurement in Helical Inducer and Estimate of Fluctuating Blade Force in Cavitation Surge Phenomena,” Japan Soc. Mech. Engrs. Inter. J., Ser.B, Vol. 45, pp. 672-677. 
    10. Kim, J.-H., Atono T., Ishizaka, K., et al., 2008, “Rotating Behavior Observation of Cavitation in Inducer with Suction Axi-asymmetrical Plate,” J. of Fluids Science and Technology, JSME, Vol. 3, No. 6, pp. 744-753. 
    11. Ishizaka, K, and Furukawa, A., 1998, “Basic Study on Advance Detection of Cavitation Surge in Helical Inducer,” Proc. US-Japan Seminar on Abnormal Flow Phenomena in Turbomachinery, Cavitation, 1-8. 

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
유료다운로드

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기