About: PIV measurement of turbulent flow within a street canyon: Detection of coherent motion

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Velocity measurements inside a street canyon were performed by means of particle image velocimetry (PIV) in a wind-channel. Two geometries were used for comparison purposes: buildings with pitched roofs and with flat roofs. Both induce different dynamic regimes in the street. Velocity data were analysed by proper orthogonal decomposition (POD). POD identifies the most dominant modes with high coherency in the flow and also evaluates the relative contributions of each mode to the kinetic energy of turbulence. Rigorous analysis of correctness of the physical interpretation of such decomposition was carried out. POD reconstruction of the original vector field was performed and the accuracy of the method was evaluated. Wavelet analysis was applied to the time-series of the POD expansion coefficients in order to reveal frequency present in the modes. Vorticity was decomposed by POD as well. Finally, the correlation between the vorticity and other methods for vortex detection was assessed. Velocity measurements inside a street canyon were performed by means of particle image velocimetry (PIV) in a wind-channel. Two geometries were used for comparison purposes: buildings with pitched roofs and with flat roofs. Both induce different dynamic regimes in the street. Velocity data were analysed by proper orthogonal decomposition (POD). POD identifies the most dominant modes with high coherency in the flow and also evaluates the relative contributions of each mode to the kinetic energy of turbulence. Rigorous analysis of correctness of the physical interpretation of such decomposition was carried out. POD reconstruction of the original vector field was performed and the accuracy of the method was evaluated. Wavelet analysis was applied to the time-series of the POD expansion coefficients in order to reveal frequency present in the modes. Vorticity was decomposed by POD as well. Finally, the correlation between the vorticity and other methods for vortex detection was assessed. (en)
Title	PIV measurement of turbulent flow within a street canyon: Detection of coherent motion PIV measurement of turbulent flow within a street canyon: Detection of coherent motion (en)
skos:prefLabel	PIV measurement of turbulent flow within a street canyon: Detection of coherent motion PIV measurement of turbulent flow within a street canyon: Detection of coherent motion (en)
skos:notation	RIV/61388998:_____/12:00376552!RIV13-AV0-61388998
http://linked.open...avai/riv/aktivita	I Z
http://linked.open...avai/riv/aktivity	I, Z(AV0Z20760514)
http://linked.open...iv/cisloPeriodika	SI
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kukačka, Libor Kellnerová, Radka Jaňour, Zbyněk Uruba, Václav Jurčáková, Klára
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	158778
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/12:00376552
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	wind-channel; street canyon; quadrant analysis; wavelet analysis; PIV; POD (en)
http://linked.open.../riv/klicoveSlovo	quadrant analysis PIV POD street canyon wind-channel wavelet analysis
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[061E05F8FBCD]
http://linked.open...i/riv/nazevZdroje	Journal of Wind Engineering and Industrial Aerodynamics
http://linked.open...in/vavai/riv/obor	DG
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	104
http://linked.open...iv/tvurceVysledku	Jaňour, Zbyněk Jurčáková, Klára Kellnerová, Radka Kukačka, Libor Uruba, Václav
http://linked.open...ain/vavai/riv/wos	000307609200032
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
issn	0167-6105
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.jweia.2012.02.017

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