Publication detail

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

POSPÍŠIL, J. HUZLÍK, J. LIČBINSKÝ, R. ŠPILÁČEK, M.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

particles; traffic; dispersion; PM10; pollution

Authors

POSPÍŠIL, J.; HUZLÍK, J.; LIČBINSKÝ, R.; ŠPILÁČEK, M.

Released

30. 4. 2020

Publisher

MDPI

Location

Basel, Switzerland

ISBN

2073-4433

Periodical

Atmosphere

Year of study

11

Number

5

State

Swiss Confederation

Pages from

1

Pages to

15

Pages count

15

URL

https://www.mdpi.com/2073-4433/11/5/454

Full text in the Digital Library

http://hdl.handle.net/11012/193406

BibTex

@article{BUT163836,
  author="Jiří {Pospíšil} and Jiří {Huzlík} and Roman {Ličbinský} and Michal {Špiláček}",
  title="Dispersion Characteristics of PM10 Particles Identified by Numerical Simulation in the Vicinity of Roads Passing through Various Types of Urban Areas",
  journal="Atmosphere",
  year="2020",
  volume="11",
  number="5",
  pages="1--15",
  doi="10.3390/atmos11050454",
  issn="2073-4433",
  url="https://www.mdpi.com/2073-4433/11/5/454"
}