Publication result detail

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

ZIMA, P.; FÜRST, T.; SEDLÁŘ, M.; KOMÁREK, M.; HUZLÍK, R.

Original Title

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

English Title

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

Type

WoS Article

Original Abstract

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 measurements. The method can resolve subtle flow characteristics that are not visible to the naked eye. The method can be used for noninvasive 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.

English abstract

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 measurements. The method can resolve subtle flow characteristics that are not visible to the naked eye. The method can be used for noninvasive 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.

Keywords

unsteady cavitation; oscillation frequency; high-speed camera observation

Key words in English

unsteady cavitation; oscillation frequency; high-speed camera observation

Authors

ZIMA, P.; FÜRST, T.; SEDLÁŘ, M.; KOMÁREK, M.; HUZLÍK, R.

RIV year

2017

Released

01.06.2016

ISBN

1001-6058

Periodical

Journal of Hydrodynamics

Volume

28

Number

3

State

People's Republic of China

Pages from

369

Pages to

378

Pages count

10

URL

http://www.sciencedirect.com/science/article/pii/S1001605816606406

BibTex

@article{BUT128704,
  author="Patrik {Zima} and Tomáš {Fürst} and Milan {Sedlář} and Martin {Komárek} and Rostislav {Huzlík}",
  title="Determination of frequencies of oscillations of cloud cavitation on a 2-D hydro-foil from high-speed camera observations",
  journal="Journal of Hydrodynamics",
  year="2016",
  volume="28",
  number="3",
  pages="369--378",
  doi="10.1016/S1001-6058(16)60640-6",
  issn="1001-6058",
  url="http://www.sciencedirect.com/science/article/pii/S1001605816606406"
}