Estimation of scalar fluxes within modelled 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_____%2F10%3A00346081" target="_blank" >RIV/61388998:_____/10:00346081 - 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
Estimation of scalar fluxes within modelled intersection depending on the approach flow direction
Original language 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 fo
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 13th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes
ISBN
2-8681-5062-4
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
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Publisher name
ARIA Technologies
Place of publication
Boulogne-Billancourt
Event location
Paris
Event date
Jun 1, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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