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Determination of frequencies of oscillations of cloud cavitation on a 2-D hydrofoil from high-speed camera observations
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SYSNO ASEP 0460682 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Determination of frequencies of oscillations of cloud cavitation on a 2-D hydrofoil from high-speed camera observations Author(s) Zima, Patrik (UT-L) RID
Fürst, T. (CZ)
Sedlář, M. (CZ)
Komárek, M. (CZ)
Huzlík, R. (CZ)Number of authors 5 Source Title Journal of Hydrodynamics . - : Elsevier - ISSN 1001-6058
Roč. 28, č. 3 (2016), s. 369-378Number of pages 10 s. Publication form Print - P Language eng - English Country CN - China Keywords unsteady cavitation ; oscillation frequency ; high-speed camera observation Subject RIV BK - Fluid Dynamics R&D Projects GA13-23550S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 UT WOS 000379107000003 EID SCOPUS 84976534243 DOI 10.1016/S1001-6058(16)60640-6 Annotation 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2017 Electronic address http://ac.els-cdn.com/S1001605816606406/1-s2.0-S1001605816606406-main.pdf?_tid=dee3b8f4-4a62-11e6-9d83-00000aacb361&acdnat=1468570098_ce8b727c766e0f96ee20d505e7058102
Number of the records: 1