Dynamics of secondary vortices in turbulent channel flow

0370281 - ÚT 2012 RIV GB eng J - Článek v odborném periodiku
Uruba, Václav - Hladík, Ondřej - Jonáš, Pavel
Dynamics of secondary vortices in turbulent channel flow.
Journal of Physics: Conference Series. Roč. 318, č. 062021 (2011), s. 1-6. ISSN 1742-6588. E-ISSN 1742-6596.
[European turbulence conference /13./. Warsaw, 12.09.2011-15.09.2011]
Grant CEP: GA ČR GA101/08/1112; GA ČR GAP101/10/1230
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: channel flow * secondary structures * dynamical systems
Kód oboru RIV: BK - Mechanika tekutin
http://iopscience.iop.org/1742-6596/318/6/062021/

Secondary vortical structures in a straight channel of rectangular cross-section are studied in details experimentally. Special attention is devoted to theirs dynamics. The stereo time- resolved PIV method is used to acquire time series of the 3-component vector elds in plane perpendicular to the mean ow. Dynamics of the vortical structures in the vector elds is studied using Proper Orthogonal Decomposition method. The dynamical modes are shown.
Trvalý link: http://hdl.handle.net/11104/0204127