Turbulence spectra evaluation using a similarity model

0348733 - ÚT 2011 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Tesař, Václav - Kordík, Jozef
Turbulence spectra evaluation using a similarity model.
Colloquium Fluid Dynamics 2010: Proceedings. Prague: Institute of Thermomechanics AS CR, v. v. i., 2010 - (Jonáš, P.; Uruba, V.), s. 25-26. ISBN 978-80-87012-27-7.
[Colloquium Fluid Dynamics 2010. Praha (CZ), 20.10.2010-22.10.2010]
Grant CEP: GA AV ČR IAA200760705; GA ČR GA101/07/1499
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: turbulence * syntetizovaný proud * podobnostní řešení
Kód oboru RIV: BK - Mechanika tekutin

Authors measured instantaneous velocities in points along the axis of a synthetic jet and evaluated there the spectral density of the measured values. Analysis of these spectra necessitates knowledge of quantities - such as the dissipation rated of eddies – difficult to evaluate and usually not know. In the present case they were found from to the earlier performed fit to quasi-similarity solution of the flowfield, based upon the one-equation model of turbulence.
Trvalý link: http://hdl.handle.net/11104/0189172