Publication detail
Particle re-suspension in street canyon with two-way traffic
POSPÍŠIL, J. JÍCHA, M.
Czech title
Resuspenze prachových částic v uličním kaňonu s protisměrným provozem
English title
Particle re-suspension in street canyon with two-way traffic
Type
journal article in Web of Science
Language
en
Original abstract
The paper focuses on determination of the wind threshold velocity of re-suspension (at the height of 10 m) and the near-ground air threshold velocity of re-suspension (at the height of 0.25 m) for particles of size 10 micrometers in a particular urban street canyon with two-way traffic. The 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 a near-ground air velocity in the street canyon.
Czech abstract
Příspěvek je zaměřen na stanovení mezní rychlosti větru (ve výšce 10 m) způsobujícího resuspenzi částic PM10 a mezní rychost proudění (ve výšce 0,25 m) způsobující resuspenzi stejných částic. Problematika je sledována v uličním kaňonu s protisměrným provozem automobilů.Mezní rychlost větru je získána z dlouhodobých měření realizovaných v centrální části města Brna. Numerická simulace s využitím metody kontrolních objemů je užita pro detailní sudii vztahu rychlosti větru nad střechami budov a rychlostí proudění v blízkosti vozovky.
English abstract
The paper focuses on determination of the wind threshold velocity of re-suspension (at the height of 10 m) and the near-ground air threshold velocity of re-suspension (at the height of 0.25 m) for particles of size 10 micrometers in a particular urban street canyon with two-way traffic. The 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 a near-ground air velocity in the street canyon.
Keywords in Czech
prachové částice, CFD, modelování, resuspenze částic, uliční kaňon
Keywords in English
particulate matter, CFD, computational fluid dynamics, modelling, particle re-suspension, urban street canyons
RIV year
2011
Released
01.02.2011
Publisher
Inderscience Enterprises Limited
Location
Geneva, Switzerland
ISSN
0957-4352
Volume
44
Number
1-4
Pages from–to
271–279
Pages count
9
BIBTEX
@article{BUT75891,
author="Jiří {Pospíšil} and Miroslav {Jícha},
title="Particle re-suspension in street canyon with two-way traffic",
year="2011",
volume="44",
number="1-4",
month="February",
pages="271--279",
publisher="Inderscience Enterprises Limited",
address="Geneva, Switzerland",
issn="0957-4352"
}