Počet záznamů: 1  

Determination of frequencies of oscillations of cloud cavitation on a 2-D hydrofoil from high-speed camera observations

  1. 1. 0460682 - UT-L 2017 RIV CN eng J - Článek v odborném periodiku
    Zima, Patrik - Fürst, T. - Sedlář, M. - Komárek, M. - Huzlík, R.
    Determination of frequencies of oscillations of cloud cavitation on a 2-D hydrofoil from high-speed camera observations.
    Journal of Hydrodynamics. Roč. 28, č. 3 (2016), s. 369-378. ISSN 1001-6058
    Grant CEP: GA ČR GA13-23550S
    Institucionální podpora: RVO:61388998
    Klíčová slova: unsteady cavitation * oscillation frequency * high-speed camera observation
    Kód oboru RIV: BK - Mechanika tekutin
    Impakt faktor: 1.174, rok: 2016
    http://ac.els-cdn.com/S1001605816606406/1-s2.0-S1001605816606406-main.pdf?_tid=dee3b8f4-4a62-11e6-9d83-00000aacb361&acdnat=1468570098_ce8b727c766e0f96ee20d505e7058102

    A method is presented to determine significant frequencies of oscillations of cavitation structures from high-speed camera recordings of a flow around a 2-D hydrofoil. The top view of the suction side of an NACA 2412 hydrofoil is studied in a transparent test section of a cavitation tunnel for selected cloud cavitation regimes with strong oscillations induced by the leading-edge cavity shedding. The ability of the method to accurately determine the dominant oscillation frequencies is confirmed by pressure measure- ments. The method can resolve subtle flow characteristics that are not visible to the naked eye. The method can be used for non- invasive experimental studies of oscillations in cavitating flows with adequate visual access when pressure measurements are not available or when such measurements would disturb the flow.
    Trvalý link: http://hdl.handle.net/11104/0260735