0617349 - ÚT 2026 CZ eng C - Conference Paper (international conference)
Trávníček, Zdeněk - Antošová, Zuzana - Wang, A.B.
Bio-Inspired Synthetic Jet Actuator with Piezoelectrically Driven Nozzle with Oscillating Cross Section Area.
Topical Problems of Fluid Mechanics 2025. Prague: Ústav termomechaniky AV ČR v. v. i., 2025 - (Šimurda, D.; Bodnár, T.), s. 241-248. ISBN 978-80-87012-05-5. ISSN 2336-5781.
[Topical Problems of Fluid Mechanics 2025. Prague (CZ), 12.02.2025-14.02.2025]
Grant - others:AV ČR(CZ) NSTC-24-03
Program: Bilaterální spolupráce
Institutional support: RVO:61388998
Keywords : actuator * synthetic jet * biomimetics
OECD category: Fluids and plasma physics (including surface physics)
Result website:
http://www2.it.cas.cz/fm/im/im/proceeding/2025/32DOI: https://doi.org/10.14311/TPFM.2025.032

A novel variant of a synthetic jet actuator (SJA) was designed and tested in air. This variant is based on biomimetic ideas recognizing that the synthetic jet principles can be observed in nature as the jetting process used by various underwater creatures to generate thrust for their locomotion. While practically all technical SJAs used rigid nozzles with constant cross-sectional areas, the living creatures use flexible and adjustable tissues. To mimic the jetting mechanism of living creatures, the proposed SJA uses a flexible nozzle with a temporally variable cross section. The modulation amplitude of the nozzle cross-section area was approximately ±33% of the average area at the driving frequency of f = 62 Hz. The characteristic velocity and Reynolds number were 7.6 m/s and 2,420, respectively.
Permanent Link: https://hdl.handle.net/11104/0366300