New Fluidic-Oscillator Concept for Flow-Separation Control

0389340 - ÚT 2014 RIV US eng J - Článek v odborném periodiku
Tesař, Václav - Zhong, S. - Rasheed, F.
New Fluidic-Oscillator Concept for Flow-Separation Control.
AIAA Journal. Roč. 51, č. 2 (2013), s. 397-405. ISSN 0001-1452. E-ISSN 1533-385X
Grant CEP: GA ČR(CZ) GCP101/11/J019; GA TA ČR TA02020795; GA ČR GA13-23046S
Výzkumný záměr: CEZ:AV0Z20760514
Institucionální podpora: RVO:61388998
Klíčová slova: fluidics * fluidic oscillator * resonator
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 1.165, rok: 2013
http://arc.aiaa.org/doi/abs/10.2514/1.J051791?journalCode=aiaaj

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.
Trvalý link: http://hdl.handle.net/11104/0221935