- Tytuł:
- Ractive pollutants dispersion modeling in a street canyon
- Autorzy:
-
Merah, A.
Noureddine, A. - Powiązania:
- https://bibliotekanauki.pl/articles/265822.pdf
- Data publikacji:
- 2019
- Wydawca:
- Uniwersytet Zielonogórski. Oficyna Wydawnicza
- Tematy:
-
zanieczyszczenia reaktywne
obliczeniowa dynamika płynów
ulica
street canyon
reactive pollutant
computational fluid dynamics CFD
NOx
O3 - Opis:
- Reactive pollutant dispersion in a 3-D urban street canyon is numerically investigated using a computational fluid dynamics (CFD) code (Ansys-CFX), with the k–ε turbulence model and includes transport equations for NO, NO2, and O3 with simple photochemistry. An area emission source of NO and NO2 was considered in the presence of background O3 with an ambient wind perpendicular to the along-canyon direction. The results showed that the magnitude of NOx (NO+NO2) concentrations on the leeward side of the upstream buildings was much larger than the windward side of the downstream building, due to the entrainment and dispersion of traffic emissions by the primary vortex. The reverse is the case for ozone with higher concentrations on the windward side compared to the leeward side. The model has been validated against no-reactive pollutant experimental data of the wind tunnel experiments of Hoydysh and Dabberdt [1].
- Źródło:
-
International Journal of Applied Mechanics and Engineering; 2019, 24, 1; 91-103
1734-4492
2353-9003 - Pojawia się w:
- International Journal of Applied Mechanics and Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł