Detail publikačního výsledku

DETERMINATION OF THE PM10 URBAN THRESHOLD VELOCITY OF RE-SUSPENSION IN AN INNER PART OF URBAN AREA

POSPÍŠIL, J.; JÍCHA, M.

Original Title

DETERMINATION OF THE PM10 URBAN THRESHOLD VELOCITY OF RE-SUSPENSION IN AN INNER PART OF URBAN AREA

English Title

DETERMINATION OF THE PM10 URBAN THRESHOLD VELOCITY OF RE-SUSPENSION IN AN INNER PART OF URBAN AREA

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

In this paper authors focus on determination of the threshold velocity of re-suspension for particles 10 m in an urban street canyon with two-way traffic. The urban wind threshold velocity of re-suspension is derived from a long-term measurement carried out in the city of Brno. A numerical modelling based on the finite volume method is used for a detail study of the relation between a wind velocity above buildings roofs and an air velocity just above the ground surface. The predicted threshold air velocity of re-suspension at the bottom part of the studied street canyon is compared with two theoretical studies on particle re-suspension. Calculations are carried out for perpendicular, longitudinal and oblique wind direction with and without inclusion of traffic dynamic. To simulate traffic, an original model developed previously by the authors is used that takes into account traffic density, speed of cars and number of traffic lanes.

English abstract

In this paper authors focus on determination of the threshold velocity of re-suspension for particles 10 m in an urban street canyon with two-way traffic. The urban wind threshold velocity of re-suspension is derived from a long-term measurement carried out in the city of Brno. A numerical modelling based on the finite volume method is used for a detail study of the relation between a wind velocity above buildings roofs and an air velocity just above the ground surface. The predicted threshold air velocity of re-suspension at the bottom part of the studied street canyon is compared with two theoretical studies on particle re-suspension. Calculations are carried out for perpendicular, longitudinal and oblique wind direction with and without inclusion of traffic dynamic. To simulate traffic, an original model developed previously by the authors is used that takes into account traffic density, speed of cars and number of traffic lanes.

Keywords

particulate matter, CFD modelling, particle re-suspension, street canyon

Key words in English

particulate matter, CFD modelling, particle re-suspension, street canyon

Authors

POSPÍŠIL, J.; JÍCHA, M.

RIV year

2010

Released

06.10.2008

ISBN

1330-0083

Periodical

Croatian Meteorological Journal

Volume

43

Number

HARMO12

State

Republic of Croatia

Pages from

657

Pages to

661

Pages count

5

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT48558,
  author="Jiří {Pospíšil} and Miroslav {Jícha}",
  title="DETERMINATION OF THE PM10 URBAN THRESHOLD VELOCITY OF RE-SUSPENSION IN AN INNER PART OF URBAN AREA",
  journal="Croatian Meteorological Journal",
  year="2008",
  volume="43",
  number="HARMO12",
  pages="657--661",
  issn="1330-0083"
}