Maximization of integral outlet quantities of an axisymmetric synthetic jet actuator based on a loudspeaker

0451250 - ÚT 2016 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Kordík, Jozef - Trávníček, Zdeněk
Maximization of integral outlet quantities of an axisymmetric synthetic jet actuator based on a loudspeaker.
Experimental Fluid Mechanics 2015. Liberec: Polypress s.r.o, 2015 - (Dančová, P.; Veselý, M.), s. 404-408
[Experimental Fluid Mechanics 2015 /10./. Praha (CZ), 17.11.2015-20.11.2015]
Grant CEP: GA ČR GA14-08888S
Institucionální podpora: RVO:61388998
Klíčová slova: synthetic jet * synthetic jet actuator * resonance
Kód oboru RIV: BK - Mechanika tekutin

The goal of this paper is to find an optimal nozzle size of an axisymmetric synthetic jet actuator based on a loudspeaker. The desirable maximized output quantities are: volumetric flow, momentum flux, and kinetic energy flux. To evaluate these quantities velocity profiles were measured using a hot-wire probe at the actuator nozzle exit. Six different nozzle diameters and three supplied real power levels were tested to find the maxima of the quantities. The actuator operated always at resonance during experiments. It was found out that the momentum flux and the kinetic energy flux reach distinguishable local maxima at particular diameters of the nozzle. Besides, the maxima of the particular quantities do not coincide and the best nozzle size slightly increases with the supplied real power to the actuator.
Trvalý link: http://hdl.handle.net/11104/0254895