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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F12%3A00376552%21RIV13-AV0-61388998
rdf:type
n7:Vysledek skos:Concept
dcterms: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.
dcterms: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
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
skos:notation
RIV/61388998:_____/12:00376552!RIV13-AV0-61388998
n7:predkladatel
n8:ico%3A61388998
n4:aktivita
n12:Z n12:I
n4:aktivity
I, Z(AV0Z20760514)
n4:cisloPeriodika
SI
n4:dodaniDat
n15:2013
n4:domaciTvurceVysledku
n6:6494315 n6:5538408 n6:2634163 n6:4644972 n6:8949573
n4:druhVysledku
n5:J
n4:duvernostUdaju
n9:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
158778
n4:idVysledku
RIV/61388998:_____/12:00376552
n4:jazykVysledku
n17:eng
n4:klicovaSlova
wind-channel; street canyon; quadrant analysis; wavelet analysis; PIV; POD
n4:klicoveSlovo
n11:POD n11:PIV n11:quadrant%20analysis n11:wind-channel n11:street%20canyon n11:wavelet%20analysis
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[061E05F8FBCD]
n4:nazevZdroje
Journal of Wind Engineering and Industrial Aerodynamics
n4:obor
n18:DG
n4:pocetDomacichTvurcuVysledku
5
n4:pocetTvurcuVysledku
5
n4:rokUplatneniVysledku
n15:2012
n4:svazekPeriodika
104
n4:tvurceVysledku
Jaňour, Zbyněk Uruba, Václav Kukačka, Libor Jurčáková, Klára Kellnerová, Radka
n4:wos
000307609200032
n4:zamer
n16:AV0Z20760514
s:issn
0167-6105
s:numberOfPages
12
n10:doi
10.1016/j.jweia.2012.02.017