Wavelet and POD Analysis of Turbulent Flow Within Street Canyon

0353417 - ÚT 2011 RIV CZ eng C - Conference Paper (international conference)
Kellnerová, Radka - Kukačka, Libor - Uruba, Václav - Antoš, Pavel - Odin, J. - Jaňour, Zbyněk
Wavelet and POD Analysis of Turbulent Flow Within Street Canyon.
International Conference Experimental Fluid Mechanics 2010. Vol. 1. Liberec: Technical University of Liberec, 2010 - (Vít, T.; Dančová, P.), s. 263-270. ISBN 978-80-7372-670-6.
[Experimental Fluid Mechanics 2010. Liberec (CZ), 24.11.2010-26.11.2010]
Institutional research plan: CEZ:AV0Z20760514
Keywords : sweet ejection * proper orthogonal decomposition * wavelet analysis
Subject RIV: DG - Athmosphere Sciences, Meteorology

Wavelet analysis of flow inside the street canyon is applied on highrepetition PIV and high-frequency hot wire data. Experiment is performed in windchannel with floor covered by series of street canyons.The passage of sweep and ejection events is detected as being long-term signature in lower frequencies. The passage of vortex is recognizable as circular patterns in higher frequencies on Wavelet spectrum.When using velocity vectors as input data, proper orthogonal decomposition (POD) reveals the most dominant modes in terms of turbulent kinetic energy.
Permanent Link: http://hdl.handle.net/11104/0192671