Wind tunel modeling of contaminant spreadining at an intersection depemding of the approach flow direction

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Wind tunel modeling of contaminant spreadining at an intersection depemding of the approach flow direction

Popis výsledku v původním jazyce

The objective of this study is physical modelling of emissions from vehicle exhausts in street canyons within an urban area. The influence of the approach flow direction on contaminant spreading from the vehicle traffic is studied in wind tunnel. The requirements of the similarity of a real atmospheric boundary layer and a model boundary layer in the wind tunnel are satisfied. For several flow directions mean velocity fields and concentration fields are measured within street canyon intersection insidesymmetrical urban built-up area. Scalar fluxes are computed from measured data to quantify pollutant spreading. Results of the experiment show a significant sensitivity of the mean velocity field at an intersection on the approach flow direction. The approach flow extensively influence contaminant spreading within the built-up area and therefore intensity of street canyons ventilation vary with the approach flow direction.

Název v anglickém jazyce

Wind tunel modeling of contaminant spreadining at an intersection depemding of the approach flow direction

Popis výsledku anglicky

The objective of this study is physical modelling of emissions from vehicle exhausts in street canyons within an urban area. The influence of the approach flow direction on contaminant spreading from the vehicle traffic is studied in wind tunnel. The requirements of the similarity of a real atmospheric boundary layer and a model boundary layer in the wind tunnel are satisfied. For several flow directions mean velocity fields and concentration fields are measured within street canyon intersection insidesymmetrical urban built-up area. Scalar fluxes are computed from measured data to quantify pollutant spreading. Results of the experiment show a significant sensitivity of the mean velocity field at an intersection on the approach flow direction. The approach flow extensively influence contaminant spreading within the built-up area and therefore intensity of street canyons ventilation vary with the approach flow direction.

Druh

D - Stať ve sborníku

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Experimental fluid mechanics

ISBN

978-80-7372-538-9

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

Technical University of Liberec

Místo vydání

Czech republic

Místo konání akce

Czech republic

Datum konání akce

1. 1. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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