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Bio-Inspired Synthetic Jet Actuator with Piezoelectrically Driven Nozzle with Oscillating Cross Section Area

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    SYSNO ASEP0617349
    Document TypeC - Proceedings Paper (int. conf.)
    R&D Document TypeThe record was not marked in the RIV
    TitleBio-Inspired Synthetic Jet Actuator with Piezoelectrically Driven Nozzle with Oscillating Cross Section Area
    Author(s) Trávníček, Zdeněk (UT-L) RID, ORCID
    Antošová, Zuzana (UT-L) ORCID, RID
    Wang, A.B. (TW)
    Number of authors3
    Source TitleTopical Problems of Fluid Mechanics 2025. - Prague : Ústav termomechaniky AV ČR v. v. i., 2025 / Šimurda D. ; Bodnár T. - ISSN 2336-5781 - ISBN 978-80-87012-05-5
    Pagess. 241-248
    Number of pages8 s.
    Publication formPrint - P
    ActionTopical Problems of Fluid Mechanics 2025
    Event date12.02.2025 - 14.02.2025
    VEvent locationPrague
    CountryCZ - Czech Republic
    Event typeWRD
    Languageeng - English
    CountryCZ - Czech Republic
    Keywordsactuator ; synthetic jet ; biomimetics
    OECD categoryFluids and plasma physics (including surface physics)
    Institutional supportUT-L - RVO:61388998
    DOI https://doi.org/10.14311/TPFM.2025.032
    AnnotationA 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.
    WorkplaceInstitute of Thermomechanics
    ContactMarie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
    Year of Publishing2026
Number of the records: 1  

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