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Open AccessArticle

Dispersion Characteristics of PM10 Particles Identified by Numerical Simulation in the Vicinity of Roads Passing through Various Types of Urban Areas

1
Energy Institute, Faculty of Mechanical Engineering, Brno University of Technology, 61669 Brno, Czech Republic
2
Transport and Environment Department, Division of Sustainable Transport and Road Structures Diagnostics, Transport Research Centre, 63600 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(5), 454; https://doi.org/10.3390/atmos11050454
Received: 30 March 2020 / Revised: 28 April 2020 / Accepted: 29 April 2020 / Published: 30 April 2020
(This article belongs to the Special Issue Ambient Air Quality in the Czech Republic)
The dispersion of particulate matter emitted by road transport to the vicinity of roads is predominantly influenced by the character of the air velocity field. The air flow depends on factors such as the speed and direction of the blowing wind, the movement of cars, and the geometries of the buildings around a road. Numerical modeling based on the control volume method was used in this study to describe the relevant processes closely. Detailed air velocity fields were identified in the vicinity of a straight road surrounded by various patterns of built-up urban land. The evaluation of the results was generalized to exponential expressions, affecting the decrease of the mass concentration of fine particles with the increasing distance from the road. The obtained characteristics of the mass concentration fields express the impact of the building geometries and configurations on the dispersion of particulate matter into the environment. These characteristics are presented for two wind speeds, namely, 2 m·s−1 and 4 m·s−1. Furthermore, the characteristics are introduced in relation to three wind directions: perpendicularly, obliquely, and in parallel to the road. The results of the numerical simulations are compared with those obtained via the in-situ measurements, for verification of the validity of the linear emission source calculation. View Full-Text
Keywords: particles; traffic; dispersion; PM10; pollution particles; traffic; dispersion; PM10; pollution
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MDPI and ACS Style

Pospisil, J.; Huzlik, J.; Licbinsky, R.; Spilacek, M. Dispersion Characteristics of PM10 Particles Identified by Numerical Simulation in the Vicinity of Roads Passing through Various Types of Urban Areas. Atmosphere 2020, 11, 454. https://doi.org/10.3390/atmos11050454

AMA Style

Pospisil J, Huzlik J, Licbinsky R, Spilacek M. Dispersion Characteristics of PM10 Particles Identified by Numerical Simulation in the Vicinity of Roads Passing through Various Types of Urban Areas. Atmosphere. 2020; 11(5):454. https://doi.org/10.3390/atmos11050454

Chicago/Turabian Style

Pospisil, Jiri; Huzlik, Jiri; Licbinsky, Roman; Spilacek, Michal. 2020. "Dispersion Characteristics of PM10 Particles Identified by Numerical Simulation in the Vicinity of Roads Passing through Various Types of Urban Areas" Atmosphere 11, no. 5: 454. https://doi.org/10.3390/atmos11050454

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