For Super-Cavitating Underwater Vehicles (SCUV), the numerical analyses and experiments in a large cavitation tunnel are carried out at relatively large Reynolds numbers. The numerical results agree well with experiments and the drag coefficient of SCUV is rarely changed by the Reynolds number. As the cavitation number is decreased, the cavity occurs and grows, the cavitator drag decreases and the body drag is affected by the degree of covering the body with the cavity. The tunnel effects, i.e. the blockage and the friction pressure drop of the tunnel, on the drag and the cavitation of SCUV are examined from the numerical results in between the tunnel and unbounded flows. In the tunnel, a minimum cavitation number exists and the drag of SCUV appears larger than that in unbounded flow. When the super-cavity covers the entire body, the friction drag almost disappears and the total drag of SCUV can be regarded as the pressure drag of cavitator


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    A numerical and experimental study on the drag of a cavitating underwater vehicle in cavitation tunnel


    Beteiligte:
    Jung-Kyu Choi (Autor:in) / Byoung-Kwon Ahn (Autor:in) / Hyoung-Tae Kim (Autor:in)


    Erscheinungsdatum :

    2015




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    A numerical and experimental study on the drag of a cavitating underwater vehicle in cavitation tunnel

    Choi, Jung-Kyu / Ahn, Byoung-Kwon / Kim, Hyoung-Tae | Online Contents | 2015



    A study on practical method to estimate drag of super-cavitating underwater vehicles

    Jung-Kyu Choi / Hyoung-Tae Kim | DOAJ | 2021

    Freier Zugriff

    Numerical vs. Experimental Cavitation Tunnel

    Kinnas, S. A. / Mazel, C. H. / National Research Council; Naval Studies Board | British Library Conference Proceedings | 1993


    Cavitator Drive System of Super Cavitating Underwater Vehicle

    YOO YOUNG JOON / KI TAE SEOK / CHO SEUNG HWAN et al. | Europäisches Patentamt | 2018

    Freier Zugriff