Annular Impinging Jets and an Active Control of Hysteretic Effects

0569707 - ÚT 2024 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Devani, Yogendrasasidhar - Antošová, Zuzana - Trávníček, Zdeněk
Annular Impinging Jets and an Active Control of Hysteretic Effects.
Topical Problems of Fluid Mechanics 2023. Praha: Ústav termomechaniky AV ČR, v. v. i., 2023 - (Šimurda, D.; Bodnár, T.), s. 13-20. ISBN 978-80-87012-83-3. ISSN 2336-5781.
[Topical Problems of Fluid Mechanics 2023. Prague (CZ), 22.02.2023-24.02.2023]
Grant CEP: GA ČR(CZ) GC21-26232J
Institucionální podpora: RVO:61388998
Klíčová slova: annular jet * impinging jet * hysteresis
Obor OECD: Thermodynamics
http://www2.it.cas.cz/fm/im/im/proceeding/2023/3

An annular impinging air jet with and without flow control was studied experimentally using measurements of the wall pressure and flow velocity by the Pitot probe. To investigate flow control swirling effects, eight synthetic jets were generated from the nozzle center body. The experiments cover Reynolds numbers 4000–10,000 (evaluated from the outer exit diameter of the annular nozzle). For Re<9000, the bistability and hysteresis were identified and two different flow field patterns (A, B) were found under the same boundary conditions. For higher Re>9000, the hysteresis were not found.
Trvalý link: https://hdl.handle.net/11104/0344096