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International journal of fluid machinery and systems v.2 no.3, 2009년, pp.206 - 214   피인용횟수: 2

Cause of Cavitation Instabilities in Three Dimensional Inducer

Kang, Dong-Hyuk    (Graduate School of Engineering Science, Osaka University   ); Yonezawa, Koichi    (Graduate School of Engineering Science, Osaka University   ); Horiguchi, Hironori    (Graduate School of Engineering Science, Osaka University   ); Kawata, Yutaka    (Department of Mechanical Engineering, Osaka Institute of Technology   ); Tsujimoto, Yoshinobu    (Graduate School of Engineering Science, Osaka University  );
  • 초록

    Alternate blade cavitation, rotating cavitation and cavitation surge in rocket turbopump inducers were simulated by a three dimensional commercial CFD code. In order to clarify the cause of cavitation instabilities, the velocity disturbance caused by cavitation was obtained by subtracting the velocity vector under non-cavitating condition from that under cavitating condition. It was found that there exists a disturbance flow towards the trailing edge of the tip cavity. This flow has an axial flow component towards downstream which reduces the incidence angle to the next blade. It was found that all of the cavitation instabilities start to occur when this flow starts to interact with the leading edge of the next blade. The existence of the disturbance flow was validated by experiments.


  • 주제어

    Inducer .   Cavitation instabilities .   Velocity disturbance .   Three dimensional CFD.  

  • 참고문헌 (5)

    1. Tsujimoto, Y., Horiguchi, H., Fujii, A., 2004, “Non-Standard Cavitation Instabilities in Inducers,” Proceedings of the 10th International Symposium on Transport Phenomenon and Dynamic of Rotating Machinery, ISROMAC10-2004-020, pp. 1-11. 
    2. Horiguchi,H.,Watanabe,S.,Tsujimoto,Y., 2000, “A Linear Stability Analysis of Cavitation in a Finite Blade Count impeller,” ASME Journal of Fluids Engineering, Vol. 122, pp. 798-805 
    3. Horiguchi,H.,Watanabe,S.,Tsujimoto,Y. and Aoki, M., 2000, “Theoretical Analysis of Alternate Blade Cavitation in Inducers,” ASME Journal of Fluids Engineering, Vol. 122, No. 1, pp. 156-163. 
    4. Hosangadi, A., Ahuja, V., Ungewitter, R.J., “Simulation of Rotational Cavitation Instabilities in the SSME LPFP Inducer,” AIAA-2007-5536. 
    5. Kang, D., Watanabe, T., Yonezawa, K., Horiguchi, H., Kawata, Y., Tsujimoto, Y., 2009, “Inducer Design to Avoid Cavitation Instabilities,” Proceeding of the 61st Turbo Machinery of Japan Conference, pp. 33-38, (in Japanese). 
  • 이 논문을 인용한 문헌 (2)

    1. 2010. "" International journal of fluid machinery and systems, 3(2): 137~149     
    2. 2014. "" International journal of fluid machinery and systems, 7(3): 94~100     

 저자의 다른 논문

  • Kang, Dong-Hyuk (4)

    1. 2008 "Choked Surge in a Cavitating Turbopump Inducer" International journal of fluid machinery and systems 1 (1): 64~75    
    2. 2009 "Large Eddy Simulation of the Dynamic Response of an Inducer to Flow Rate Fluctuations" International journal of fluid machinery and systems 2 (4): 431~438    
    3. 2009 "Inducer Design to Avoid Cavitation Instabilities" International journal of fluid machinery and systems 2 (4): 439~448    
    4. 2010 "Suppression of Cavitation Instabilities in an Inducer by Circumferential Groove and Explanation of Higher Frequency Components" International journal of fluid machinery and systems 3 (2): 137~149    

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