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Numerical simulation on pollutant dispersion from vehicle exhaust in street configurations
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SYSNO ASEP 0341207 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Numerical simulation on pollutant dispersion from vehicle exhaust in street configurations Author(s) Yassin, Mohamed F. (EG)
Kellnerová, Radka (UT-L) RID, ORCID
Jaňour, Zbyněk (UT-L) RID, ORCIDSource Title Environmental Monitoring and Assessment. - : Springer - ISSN 0167-6369
Roč. 156, 1-4 (2009), s. 257-273Number of pages 17 s. Language eng - English Country NL - Netherlands Keywords atmospheric turbulent ; CFD model ; pollutant dispersion Subject RIV DG - Athmosphere Sciences, Meteorology CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000268776400020 DOI 10.1007/s10661-008-0482-4 Annotation The impact of the street configurations on pollutants dispersion from vehicles exhausts within urban canyons was numerically investigated using a computational fluid dynamics (CFD) model. Three-dimensional flow and dispersion of gaseous pollutants were modeled using standard k-epsilon turbulence model, which was numerically solved based on Reynolds-averaged Navier-- Stokes equations by the commercial CFD code FLUENT. The concentration fields in the urban canyons were examined in three cases of street configurations: (1) a regular-shaped intersection, (2) a T-shaped intersection and (3) a Skew-shaped crossing intersection. Vehicle emissions were simulated as double line sources along the street. The numerical model was validated against wind tunnel results in order to optimize the turbulence model. Numerical predictions agreed reasonably well with wind tunnel results. 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 2010
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