WIND TUNNEL MODELING OF CONTAMINANT SPREADING AT AN INTERSECTION DEPENDING ON THE APPROACH FLOW DIRECTION

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F09%3A00333100" target="_blank" >RIV/61388998:_____/09:00333100 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
WIND TUNNEL MODELING OF CONTAMINANT SPREADING AT AN INTERSECTION DEPENDING ON THE APPROACH FLOW DIRECTION
Original language description
The objective of this study is physical modelling of emissions from vehicle exhausts in street canyons within an urban area and the influence of the approach flow direction on contaminant spreading. The requirements of the similarity of the atmospheric boundary layer and a boundary layer in the wind tunnel are satisfied. For several flow directions mean velocity and concentration fields are measured within street canyon intersection inside symmetrical urban built-up area. Scalar fluxes are computed frommeasured data to quantify pollutant spreading. Results of the experiment show a significant sensitivity of the mean velocity field on the approach flow direction. The approach flow extensively influence contaminant spreading within the built-up area andtherefore intensity of street canyons ventilation vary with the approach flow direction. The approximate flow direction with the most favourable dispersion conditions in the studied area is found out.
Czech name
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Czech description
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Project
<a href="/en/project/OC%20113" target="_blank" >OC 113: Urban canopy : data set collection and development</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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