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Axisymmetric impinging jet excited by a synthetic jet system
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SYSNO ASEP 0369145 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Axisymmetric impinging jet excited by a synthetic jet system Author(s) Trávníček, Zdeněk (UT-L) RID, ORCID
Němcová, L. (CZ)
Kordík, Jozef (UT-L) RID
Tesař, Václav (UT-L) RID
Kopecký, V. (CZ)Number of authors 5 Source Title International Journal of Heat and Mass Transfer. - : Elsevier - ISSN 0017-9310
Roč. 55, č. 4 (2012), s. 1279-1290Number of pages 12 s. Language eng - English Country US - United States Keywords impinging jet ; synthetic jet ; flow control Subject RIV BK - Fluid Dynamics R&D Projects IAA200760801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA101/09/1959 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000300470200078 DOI 10.1016/j.ijheatmasstransfer.2011.09.015 Annotation An axisymmetric air jet was excited, using a system of four synthetic jets, to the helical or bifurcating modes. The task was studied experimentally: the flow visualization, hot-wire anemometry, PIV, and naphthalene sublimation techniques were used. The effects of the Strouhal number and nozzle-to-wall spacing on a distribution of the local heat transfer were evaluated. The most significant effects (heat transfer enhancement 40% in the stagnation area) were found at the Strouhal numbers 0.32, Reynolds number 1600, ratio of the control to primary jet momentum rates 2.4%, and under small nozzle-to-wall spacing H/D = 2. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2012 Electronic address http://www.sciencedirect.com/science/article/pii/S0017931011005126
Number of the records: 1