Numerical simulation on pollutant dispersion from vehicle exhaust in street configurations

0341207 - ÚT 2010 RIV NL eng J - Journal Article
Yassin, Mohamed F. - Kellnerová, Radka - Jaňour, Zbyněk
Numerical simulation on pollutant dispersion from vehicle exhaust in street configurations.
Environmental Monitoring and Assessment. Roč. 156, 1-4 (2009), s. 257-273. ISSN 0167-6369. E-ISSN 1573-2959
Institutional research plan: CEZ:AV0Z20760514
Keywords : atmospheric turbulent * CFD model * pollutant dispersion
Subject RIV: DG - Athmosphere Sciences, Meteorology
Impact factor: 1.356, year: 2009
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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.
Permanent Link: http://hdl.handle.net/11104/0184265