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Lateral transport of traffic pollutants in complex urban area
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SYSNO ASEP 0491352 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Lateral transport of traffic pollutants in complex urban area Author(s) Kluková, Zuzana (UT-L) ORCID
Nosek, Štěpán (UT-L) RID, ORCID
Jaňour, Zbyněk (UT-L) RID, ORCID
Kukačka, L. (CZ)Article number 02125 Source Title EPJ Web of Conferences. - Les Ulis : Cedex: EDP Sciences, 2018 Number of pages 7 s. Publication form Online - E Action EFM17 – Experimental Fluid Mechanics 2017 Event date 21.11.2017 - 24.11.2017 VEvent location Mikulov Country CZ - Czech Republic Event type WRD Language eng - English Country FR - France Keywords pollution flux ; street canyon ; measurements near walls ; wind tunnel Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences Institutional support UT-L - RVO:61388998 UT WOS 000454317800126 DOI 10.1051/epjconf/201818002125 Annotation Owing to the spatial variability of an urban area, even the transport of passive scalar is complex. The examination of the pollutant transport in such turbulent flow as occur within the urban canopy requires the measurements not only the advective but also the turbulent part of this transport. However, recent measurement techniques for the turbulent transport have their limitations. In particular, these measurements are very demanding if one needs to analyze the ventilation processes of the street through the entire streetcanyon openings and which needs to be performed also in the positions where the handling with the measurement instruments might comprise a complex issue or is even impossible. Thus we present a comparison of two methods for the assessment of turbulent and advective pollution fluxes through the lateral openings of two different street canyons with respect to the wind direction and the roof-height nonuniformity to evaluate the importance of the measurement of these fluxes nearby the street-canyon walls. Both of them are based on the simultaneous point measurement of concentration and lateral velocity component and the interpolation between the last measured point and the street-canyon borders, but in the second method the measured area is extended from 77% to 84% of the total area of the lateral openings. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2019 Electronic address https://www.epj-conferences.org/articles/epjconf/pdf/2018/15/epjconf_efm2018_02125.pdf
Number of the records: 1