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Fluidic oscillator with bistable turn-down amplifier
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SYSNO ASEP 0434213 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Fluidic oscillator with bistable turn-down amplifier Author(s) Tesař, Václav (UT-L) RID
Smyk, E. (PL)
Peszyński, K. (PL)Number of authors 3 Source Title Colloquium FLUID DYNAMICS 2014 . - Praha : Ústav termomechaniky AV ČR, v. v. i., 2014 / Jonáš P. ; Uruba V. - ISBN 978-80-87012-53-6 Pages s. 31-32 Number of pages 2 s. Publication form Medium - C Action Colloquium FLUID DYNAMICS 2014 Event date 22.10.2014-24.10.2014 VEvent location Praha Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords fluidics ; oscillator ; vortex chamber Subject RIV BK - Fluid Dynamics R&D Projects GA13-23046S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 DOI https://doi.org/10.13140/2.1.1702.1448 Annotation 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. 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 2015
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