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ORIGINAL PAPER
Reactive Pollutants Dispersion Modeling in a Street Canyon
1
Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques BP 384, Siège ex-Pasna Zone Industrielle Bou-Ismail CP 42004, Tipaza, Algerie; , Laboratoire de Mécanique Appliquée LMA , Université des Sciences et de la Technologie d’Oran Mohamed BOUDIAF (USTO-MB) Algerie
2
Laboratoire de Mécanique Appliquée LMA, Université des Sciences et de la Technologie d’Oran Mohamed BOUDIAF (USTO-MB) Algerie
Online publication date: 2019-03-12
Publication date: 2019-03-01
International Journal of Applied Mechanics and Engineering 2019;24(1):91-103
KEYWORDS
ABSTRACT
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].
REFERENCES (18)
1.
Hoydysh W.G. and Dabberdt W.F. (1988): Kinematics and dispersion characteristics of flows in asymmetric street canyons. – Atmospheric Environment, vol.22, No.12, pp.2677-2689.
2.
Garmory A., Kim I.S., Britter R.E. and Mastorakos E. (2009): Simulations of the dispersion of reactive pollutants in a street canyon, considering different chemical mechanisms and micromixing. – Atmospheric Environment, vol.43, No.31, pp.4670-4680.
3.
Kastner-Klein P. and Plate P.J. (1999): Wind-tunnel study of concentration fields in street canyons. – Atmospheric Environment, vol.33, No.24-25, pp.3937-3979.
4.
Meroney R.N. and Pavageau M. (1996): Study of line source characteristics for 2-D physical modelling of pollutant dispersion in street canyons. – Journal of Wind Engineering and Industrial Aerodynamics, vol.62, No.1, pp.37-56.
5.
Oke T.R. (1988): Street design and urban canopy layer climate. – J. Energy and Buildings, vol.11, No.1-3, pp.103-131.
6.
Cheng W.C., Chun-Ho L. and Dennis Y.C.L. (2009): On the correlation of air and pollutant exchange for street canyons in combined wind-buoyancy-driven flow. – Atmospheric Environment, vol.43, No.24, pp.3682-3690.
7.
Johnson G.T. and Hunter L.J. (1999): Some insights into typical urban canyon airflows. – Atmospheric Environment, vol.33, No.24-25, pp.3991–3999.
8.
Rotach M.W. (1995): Profiles of turbulence statistics in and above an urban street canyon. – Atmospheric Environment, vol.29, No.13, pp.1473-1486.
9.
Sini J.F., Anquetin S. and Mestayer G. (1996): Pollutant dispersion and thermal effects in urban street canyons. – Atmospheric Environment, vol.30, No.15, pp.2659-2677.
10.
Merah A., Noureddine A. and Abidat M. (2016): CFD photochemical modelling in an urban street canyon. – Der Pharma Chemica, vol.8, No.4, pp.418-424.
11.
Giorgio S.S. (1979): Application of the Redlich-Kwong-Soave Equation of state to solid-liquid equilibrium calculations. – Chemical Engineering Science, vol.34, No.2, pp.225-229.
12.
Baker J., Walker Helen L. and Cai X. (2004): A study of the dispersion and transport of reactive pollutants in and above street canyons—a large eddy simulation. – Atmospheric Environment, vol.38, No.39, pp.6883-6892.
13.
Stern R. and Yamartino R.J. (2001): Development and first evaluation of micro-calgrid: a 3-D, urban-canopyscale photochemical model. – Atmospheric Environment, vol.35, No.1, pp.149-165.
14.
Yoshihide T., Akashi M., Ryuichiro Y., Hiroto K., Tsuyoshi N., Masaru Y. and Taichi Shirasawa S. (2008): AIJ guidelines for practical Applications of CFD to pedestrian wind environment around buildings. – Journal of Wind Engineering and Industrial Aerodynamics, vol.96, No.10-11, pp.1749-1761.
15.
Baik J.J., Kang Y.S. and Kim J.J. (2007): Modelling reactive pollutant dispersion in an urban street canyon. – Atmospheric Environment, vol.41, No.5, pp.934-949.
16.
Bright V.B., Bloss W.J. and Cai X. (2013): Urban street canyons: coupling dynamics, chemistry and withincanyon chemical processing of emissions. – Atmospheric Environment, vol.68, pp.127-142.
17.
Yucong M., Shuhua L., Yijia Z., Shu W. and Yuan L. (2014): Numerical study of traffic pollutant dispersion within different street canyon configurations. – Advances in Meteorology, vol.2014, ID 458671, pp.1-14.
18.
Triantafyllou A.G., Zoras S., Evagelopoulos V., Garas S. and Diamantopoulos C. (2008): DOAS measurements above an urban street canyon in a medium sized city. – Global NEST Journal, vol.10, No.2, pp.161-168.
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