Počet záznamů: 1
Annular impinging jets controlled by synthetic jets inducing a swirling flow character
- 1.
SYSNO ASEP 0586199 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Annular impinging jets controlled by synthetic jets inducing a swirling flow character Tvůrce(i) Devani, Yogendrasasidhar (UT-L) RID, ORCID
Antošová, Zuzana (UT-L) ORCID, RID
Trávníček, Zdeněk (UT-L) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. Journal of Visualization. - : Springer - ISSN 1343-8875
Roč. 27, č. 3 (2024), s. 291-305Poč.str. 15 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova annular jet ; impinging jet ; hysteresis ; flow control ; swirling flow ; synthetic jet Vědní obor RIV JU - Aeronautika, aerodynamika, letadla Obor OECD Aerospace engineering CEP GC21-26232J GA ČR - Grantová agentura ČR GC21-26232J GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UT-L - RVO:61388998 UT WOS 001184462100001 EID SCOPUS 85187934161 DOI https://doi.org/10.1007/s12650-024-00972-4 Anotace Experimental research was conducted on an annular air jet. The active flow control was introduced by means of tangentially arranged synthetic jets. Flow visualization and measurements of the flow velocity and stagnation pressure on an impingement wall were performed. Tests were carried out with Reynolds numbers ranging from 4000 to 10,000 (evaluated from the outer exit diameter of the annular nozzle). Bistability and hysteretic effects were revealed, because two alternative flow field patterns (A and B) were identified under the same boundary conditions. In the A pattern, a small recirculation area (bubble) of separated flow was attached to the nozzle centerbody. In the B pattern, a large recirculation area of separated flow bridged the entire nozzle-to-wall distance. The effect of the Reynolds number was evaluated: the hysteresis and bistability were not observed for Re C 9000. Concerning the effect of flow control, it was concluded that a moderate swirling effect can effectively suppress the hysteresis and bistability. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2025 Elektronická adresa https://link.springer.com/article/10.1007/s12650-024-00972-4
Počet záznamů: 1