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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F09%3A00331558%21RIV10-AV0-61388998
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The vertical ventilation of a gaseous pollutant released at the street level to the relatively unobstructed flow above the urban canopy is the main interest of our study. Simultaneous measurement of passive tracer concentration and vertical wind component with high temporal resolution is very unique technique and allows us to directly derive the advective and turbulent vertical scalar transfer terms. Comparison of the measurements within 18 different arrangements of idealised urban canopies (with different packing densities, building layouts, and height variations) is shown. Both advective and turbulent vertical scalar transfer is enhanced in denser set-ups and set-ups with high variability of building heights. The individual buildings and their unique heights are important for the advective vertical transport and this phenomenon is stronger for denser set-ups. The turbulent vertical transport characteristics are mainly given by general urban roughness performance. The vertical ventilation of a gaseous pollutant released at the street level to the relatively unobstructed flow above the urban canopy is the main interest of our study. Simultaneous measurement of passive tracer concentration and vertical wind component with high temporal resolution is very unique technique and allows us to directly derive the advective and turbulent vertical scalar transfer terms. Comparison of the measurements within 18 different arrangements of idealised urban canopies (with different packing densities, building layouts, and height variations) is shown. Both advective and turbulent vertical scalar transfer is enhanced in denser set-ups and set-ups with high variability of building heights. The individual buildings and their unique heights are important for the advective vertical transport and this phenomenon is stronger for denser set-ups. The turbulent vertical transport characteristics are mainly given by general urban roughness performance.
dcterms:title
ROLE OF INDIVIDUAL BUILDINGS IN SCALAR TRANSFER ROLE OF INDIVIDUAL BUILDINGS IN SCALAR TRANSFER
skos:prefLabel
ROLE OF INDIVIDUAL BUILDINGS IN SCALAR TRANSFER ROLE OF INDIVIDUAL BUILDINGS IN SCALAR TRANSFER
skos:notation
RIV/61388998:_____/09:00331558!RIV10-AV0-61388998
n3:aktivita
n20:Z
n3:aktivity
Z(AV0Z20760514)
n3:dodaniDat
n10:2010
n3:domaciTvurceVysledku
n4:8949573 n4:5538408
n3:druhVysledku
n11:D
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
339723
n3:idVysledku
RIV/61388998:_____/09:00331558
n3:jazykVysledku
n14:eng
n3:klicovaSlova
urban canopy; vertical scalar transfer; wind tunnel atmospheric boundary layer
n3:klicoveSlovo
n6:wind%20tunnel%20atmospheric%20boundary%20layer n6:urban%20canopy n6:vertical%20scalar%20transfer
n3:kontrolniKodProRIV
[B5D9AEC59CAC]
n3:mistoKonaniAkce
Rhode-St-Genése
n3:mistoVydani
Rhode-St-Genése
n3:nazevZdroje
Proceedings of the Conference on Physical Modelling of Flow and Dispersion Phenomena
n3:obor
n13:DG
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n10:2009
n3:tvurceVysledku
Ohba, M. Jaňour, Zbyněk Bezpalcová, Klára
n3:typAkce
n19:WRD
n3:zahajeniAkce
2009-08-24+02:00
n3:zamer
n9:AV0Z20760514
s:numberOfPages
8
n7:hasPublisher
von Karman Institute for Fluid Dynamics
n16:isbn
978-2-930389-42-7