About: Estimation of scalar fluxes within modelled intersection depending on the approach flow direction

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In built-up areas street intersections represent regions of dangerous pollutant exchanges between street-canyons. The objective of this study is to investigate the influence of the approach flow direction on contaminant spreading within an intersection in an idealised symmetrical urban area. Mean velocity and concentration fields are measured at an urban area model in wind tunnel for five wind directions. Horizontal and vertical advective scalar fluxes are computed from measured data to quantify pollutant spreading. Experiment results show a significant sensitivity of measured quantities within the area on the approach flow direction. The highest contaminant concentrations and fluxes are measured in the bottom parts of street-canyons. The important role of the vertical turbulent scalar flux in street-canyon ventilation is expected because of non-zero sum of measured advective fluxes in the closed area. The set-up with the most favourable dispersion conditions in the studied area was found. In built-up areas street intersections represent regions of dangerous pollutant exchanges between street-canyons. The objective of this study is to investigate the influence of the approach flow direction on contaminant spreading within an intersection in an idealised symmetrical urban area. Mean velocity and concentration fields are measured at an urban area model in wind tunnel for five wind directions. Horizontal and vertical advective scalar fluxes are computed from measured data to quantify pollutant spreading. Experiment results show a significant sensitivity of measured quantities within the area on the approach flow direction. The highest contaminant concentrations and fluxes are measured in the bottom parts of street-canyons. The important role of the vertical turbulent scalar flux in street-canyon ventilation is expected because of non-zero sum of measured advective fluxes in the closed area. The set-up with the most favourable dispersion conditions in the studied area was found. (en)
Title	Estimation of scalar fluxes within modelled intersection depending on the approach flow direction Estimation of scalar fluxes within modelled intersection depending on the approach flow direction (en)
skos:prefLabel	Estimation of scalar fluxes within modelled intersection depending on the approach flow direction Estimation of scalar fluxes within modelled intersection depending on the approach flow direction (en)
skos:notation	RIV/61388998:_____/10:00346081!RIV11-AV0-61388998
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z20760514)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kukačka, Libor Kellnerová, Radka Jaňour, Zbyněk Jurčáková, Klára
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
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	257566
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/10:00346081
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	air pollution; atmospheric boundary layer; physical modelling; contaminant spreading (en)
http://linked.open.../riv/klicoveSlovo	atmospheric boundary layer contaminant spreading physical modelling air pollution
http://linked.open...ontrolniKodProRIV	[1475E246F0B4]
http://linked.open...v/mistoKonaniAkce	Paris
http://linked.open...i/riv/mistoVydani	Boulogne-Billancourt
http://linked.open...i/riv/nazevZdroje	Proceedings of the 13th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes
http://linked.open...in/vavai/riv/obor	DG
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Jaňour, Zbyněk Jurčáková, Klára Kellnerová, Radka Kukačka, Libor
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2010-06-01 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	ARIA Technologies
https://schema.org/isbn	2-8681-5062-4

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