In this paper, experimental observation and numerical calculation are applied to investigate the vortex-cavitation interactionin the blade tip region. Calculated performances have good agreement with experimental results. The evolution of TLVC is analysed byHigh-speed photography (HSP) at the selected cavitation condition. Liutex method was adopted to identify the tip leakage vortex (TLV)core centre. According to the radial location of the TLV core centre and the development of TLVC, the flow along the blade can bedivided into three regimes: stable cavitation, unstable cavitation and non-cavitation flow. Tip leakage flow (TLF) and main flow haveeffects on the TLV intensity and trajectory. Finally, different terms of vorticity transport equation were used to analyse the contributionof cavitation to the production and reallocation of vorticity in a rotating frame. It shows that circumferential dilatation and axial vortexstretching terms mainly contribute to vorticity production and its relocation.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical investigation and experimental observation of unsteady tip leakage cavitating flow for the axial waterjet pump


    Contributors:
    Xu, Shun (author) / Long, Xin-ping (author) / Ji, Bin (author) / Li, Gui-bin (author) / Xiong, Yong-liang (author)

    Published in:

    Publication date :

    2023-07-03


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    Numerical analysis of unsteady cavitating flow in an axial inducer

    Campos-Amezcua, R. / Kehelladi, S. / Bakir, F. et al. | Tema Archive | 2010


    Numerical method for the analysis of cavitating waterjet propulsion systems

    Chang, Shu-Hao / Kinnas, Spyros A. | Tema Archive | 2012


    Turbulence Within the Tip-Leakage Vortex of an Axial Waterjet Pump

    Wu, Huixuan / Miorini, Rinaldo L. / Tan, David et al. | AIAA | 2012