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

0473469 - ÚT 2017 RIV FR eng J - Journal Article
Kordík, Jozef - Trávníček, Zdeněk
Maximization of integral outlet quantities of an axisymmetric synthetic jet actuator based on a loudspeaker.
EPJ Web of Conferences. Roč. 114, March (2016), č. článku 02152. ISSN 2101-6275.
[International Conference on Experimental Fluid Mechanics /10./. Praha, 17.11.2015-20.11.2015]
R&D Projects: GA ČR GA14-08888S
Institutional support: RVO:61388998
Keywords : synthetic jet * synthetic jet actuator * resonance
Subject RIV: JU - Aeronautics, Aerodynamics, Aircrafts

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.
Permanent Link: http://hdl.handle.net/11104/0270622