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New Fluidic-Oscillator Concept for Flow-Separation Control
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SYSNO ASEP 0389340 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title New Fluidic-Oscillator Concept for Flow-Separation Control Author(s) Tesař, Václav (UT-L) RID
Zhong, S. (GB)
Rasheed, F. (GB)Source Title AIAA Journal - ISSN 0001-1452
Roč. 51, č. 2 (2013), s. 397-405Number of pages 9 s. Publication form Print - P Language eng - English Country US - United States Keywords fluidics ; fluidic oscillator ; resonator Subject RIV BK - Fluid Dynamics R&D Projects GCP101/11/J019 GA ČR - Czech Science Foundation (CSF) TA02020795 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) GA13-23046S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000314673300011 EID SCOPUS 84875283976 DOI 10.2514/1.J051791 Annotation Anovel fluidic oscillator, particularly suitable to serve as the key element in actuators for control of fluid flows, was proposed and experimentally investigated. Its core part, as in known oscillators, is a fluidic bistable jet-deflection diverter amplifier. The unique feature of the new layout is the absence of the closed feedback loop channels. Instead, there is a quarter-wave Helmholtz resonator tube connected to one of the amplifier control terminals. The acoustic waves traveling in it and reflected from its open end cause the phase-delayed switching of the amplifier. The main advantage is high achievable oscillation frequency and no dependence on the flow rate. 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 2014
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