0617492 - ÚT 2026 CZ eng C - Conference Paper (international conference)
Antošová, Zuzana - Arhens, B. - Pech, Jan
Axisymmetric Jet under Active Control by Coaxial Synthetic Jet.
Topical Problems of Fluid Mechanics 2025. Prague: Ústav termomechaniky AV ČR v. v. i., 2025 - (Šimurda, D.; Bodnár, T.), s. 1-6. 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 : synthetic jet * axisymmetric jet * flow control
OECD category: Fluids and plasma physics (including surface physics)
Result website:
http://www2.it.cas.cz/fm/im/im/proceeding/2025/1DOI: https://doi.org/10.14311/TPFM.2025.001

Axisymmetric continuous air jet issuing from a long straight pipe nozzle was actively controlled using coaxially placed annular synthetic jet. The Reynolds numbers of the main and control jets were kept constant, 5000 and 750, respectively. The topic was studiedexperimentally using PIV technique and numerically using commercial software FLUENT. It was shown that active control induces large-scale stream-wise velocity fluctuation, increases axial velocity and prolongs the potential core of the main jet.
Permanent Link: https://hdl.handle.net/11104/0366301