Visualization study of hybrid synthetic jets

0448851 - ÚT 2016 RIV DE eng J - Článek v odborném periodiku
Broučková, Zuzana - Trávníček, Zdeněk
Visualization study of hybrid synthetic jets.
Journal of Visualization. Roč. 18, č. 4 (2015), s. 581-593. ISSN 1343-8875. E-ISSN 1875-8975
Grant CEP: GA ČR GA14-08888S
Institucionální podpora: RVO:61388998
Klíčová slova: synthetic jet * efficiency * flow visualization
Kód oboru RIV: JU - Aeronautika, aerodynamika, letadla
Impakt faktor: 0.720, rok: 2015
http://link.springer.com/article/10.1007/s12650-014-0256-8

A hybrid synthetic jet (HSJ) combines a principle of a synthetic jet (SJ) with fluidic pumping through a valveless pump. This study addresses round HSJs in air. A SJ is also used. The Reynolds numbers are 11,000 (HSJs) and 9,000 (SJs). Five experimental methods are employed: visualization (smoke-wire technique), velocity measurements (hot-wire anemometer, Pitot tube), impedance measurements and measurements of the jet momentum. The HSJ achieves 24 % higher pumped volume flow rate than SJ (the maximum volumetric efficiency is 33 %). The overall energy efficiency of the HSJ actuator is 1.8 times higher than that of the SJ actuator.
Trvalý link: http://hdl.handle.net/11104/0251406