Visualization study of hybrid synthetic jets

0429667 - ÚT 2015 JP eng C - Konferenční příspěvek (zahraniční konf.)
Broučková, Zuzana - Trávníček, Zdeněk
Visualization study of hybrid synthetic jets.
16th International Symposium on Flow Visualization, ISFV16. Okinawa: Visualization Society of Japan, 2014, s. 1-16.
[International Symposium on Flow Visualization /16./, ISFV16. Okinawa (JP), 24.06.2014-28.06.2014]
Grant CEP: GA ČR GA14-08888S
Institucionální podpora: RVO:61388998
Klíčová slova: synthetic jet * flow visualization * hot-wire anemometry
Kód oboru RIV: JU - Aeronautika, aerodynamika, letadla

This study deals with a round hybrid synthetic jet (HSJ). For comparison purposes, common (zero-net-mass-flux) synthetic jet (SJ) is used. The working fluid is air. Five experimental methods are employed: flow visualization, hot-wire anemometry, velocity measurements by the Pitot tube, impedance measurements, and measurements of the jet momentum using the precision scales. Advantages of HSJs are demonstrated. The tested HSJ achieves higher pumped volume flow rate by 24 % in comparison with SJ, at the maximum volumetric efficiency of 33 %. The overall energy efficiency of the HSJ actuator is 1.8 times higher than one of the SJ actuator
Trvalý link: http://hdl.handle.net/11104/0235413