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Wavelet analysis of the turbulent flow over the very rough surface
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SYSNO ASEP 0427652 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Wavelet analysis of the turbulent flow over the very rough surface Author(s) Kellnerová, Radka (UT-L) RID, ORCID
Kukačka, Libor (UT-L) RID
Nosek, Štěpán (UT-L) RID, ORCID
Uruba, Václav (UT-L) RID, ORCID
Jurčáková, Klára (UT-L) RID, ORCID
Jaňour, Zbyněk (UT-L) RID, ORCIDSource Title EFM 2013 - Experimental Fluid Mechanics 2013. - Kutná Hora : E D P Sciences, 2014 / Vít T. ; Dančová P. ; Novotný P. - ISSN 2101-6275 - ISBN 978-80-260-5375-0 Number of pages 9 s. Publication form Print - P Action Experimental Fluid Mechanics 2013 Event date 19.11.2013-22.11.2013 VEvent location Kutná Hora Country CZ - Czech Republic Event type EUR Language eng - English Country FR - France Keywords wind-channel ; street canyon ; wavelet analysis ; quadrant analysis ; sweep nad ejection Subject RIV DG - Athmosphere Sciences, Meteorology R&D Projects GAP101/12/1554 GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 EID SCOPUS 84900523569 DOI 10.1051/epjconf/20146702051 Annotation Wavelet analysis is applied to data from PIV measurement in order to recognize a specific structure in the flow. The PIV snaphots achieved on the model of the street canyon was used as a test case. Four flow characteristics that are at disposal from one-point simultaneous two-components measurement (e.g. from 2D LDA) were analyzed by Wavelet method: longitudinal and vertical velocity, momentum flux u’w’ and δS – the difference between momentum fluxes associated with a sweep and an ejection. Each of characteristic is useful for detection of certain type of event. We have focused on the sweep and the ejection that seem to be the most convenient for investigation of a significant inflow or an outflow from the street canyon. 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 2015
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