Fluidic oscillator with bistable turn-down amplifier

0434213 - ÚT 2015 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Tesař, Václav - Smyk, E. - Peszyński, K.
Fluidic oscillator with bistable turn-down amplifier.
Colloquium FLUID DYNAMICS 2014. Praha: Ústav termomechaniky AV ČR, v. v. i., 2014 - (Jonáš, P.; Uruba, V.), s. 31-32. ISBN 978-80-87012-53-6.
[Colloquium FLUID DYNAMICS 2014. Praha (CZ), 22.10.2014-24.10.2014]
Grant CEP: GA ČR GA13-23046S
Institucionální podpora: RVO:61388998
Klíčová slova: fluidics * oscillator * vortex chamber
Kód oboru RIV: BK - Mechanika tekutin

Search for new principles of no-moving-part fluidic oscillators suitable for operation at low frequency – and yet compact – has led to a design based on the amplifier configuration combining bistability (capability to remain in two alternative stable regimes) with capability to turn down the fluid flow passing through it. The feedback was arranged in a manner of recently introduced oscillators with resonator channel. Tests revealed the expected non-constant Strouhal number - but, rather strange, no dependence was found of oscillation frequency on the channel length.
Trvalý link: http://hdl.handle.net/11104/0239245