Synthetic jet actuators with rigid and temporally variable nozzles

0576280 - ÚT 2024 US eng C - Konferenční příspěvek (zahraniční konf.)
Trávníček, Zdeněk - Antošová, Zuzana
Synthetic jet actuators with rigid and temporally variable nozzles.
10th International Symposium on Turbulence, Heat and Mass Transfer : THMT-23. New York: Begell House, Inc., 2023, s. 171-174. ISBN 978-1-56700-534-9. ISSN 2377-4169. E-ISSN 2377-2816.
[International Symposium On Turbulence, Heat and Mass Transfer /10./. Rome (IT), 11.09.2023-15.09.2023]
Grant CEP: GA ČR(CZ) GC21-26232J
Klíčová slova: syntetic jet * actuator * biomimetics
Obor OECD: Thermodynamics

Four variants of SJAs were designed and tested. Two SJAs used common rigid slot nozzles. Considering biomimetic principles, two others SJAs were designed with temporally variable slot nozzles. Three experimental methods were used: phase-locked visualization and optical measurements of oscillating nozzle lips, hot-wire anemometry, and jet momentum flux measurement using a precision scale. The results demonstrate abilities of the bio-inspired SJAs with temporally variable nozzles, because these actuators obtain higher parameters in comparison with similar SJAs with rigid nozzles. Namely, a 12% enhancement of the stagnation point Nusselt number was concluded.
Trvalý link: https://hdl.handle.net/11104/0351462