Publication detail

CFD Prediction of Air Quality in the Area between Two City Vehicular Tunnels Considering Moving Cars

KATOLICKÝ, J., POSPÍŠIL, J., JÍCHA, M.

Original Title

CFD Prediction of Air Quality in the Area between Two City Vehicular Tunnels Considering Moving Cars

Czech Title

CFD Prediction of Air Quality in the Area between Two City Vehicular Tunnels Considering Moving Cars

English Title

CFD Prediction of Air Quality in the Area between Two City Vehicular Tunnels Considering Moving Cars

Type

journal article

Language

en

Original Abstract

Concentration fields of different pollutants that spread outside two road tunnels predicted with a CFD code will be presented. The solution domain represents the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The vicinity of both tunnels is a heavily built up area with tall buildings forming typical street canyons. The CFD modelling predicts the situation after the tunnel Mrazovka will be finished and traffic will increase considerably between both tunnels. Namely, an interest was given to the prediction of dispersion of emissions leaving both tunnel and the area touched by the traffic. For the CFD predictions, a method previously developed for moving vehicles was used. The method uses combination of Eulerian and Lagrangian approaches to moving objects and is capable of modeling different speeds and traffic rates of cars as well as traffic-induced turbulence. Influence of several meteorological parameters was studied, namely wind speed and direction and traffic parameters, like traffic rates and speed of cars. The method separates contributions from different sources to the total concentration field, namely from background, tunnel outlet and roadway. Results are presented in the form of horizontal and vertical concentration fields of NOx.

Czech abstract

Concentration fields of different pollutants that spread outside two road tunnels predicted with a CFD code will be presented. The solution domain represents the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The vicinity of both tunnels is a heavily built up area with tall buildings forming typical street canyons. The CFD modelling predicts the situation after the tunnel Mrazovka will be finished and traffic will increase considerably between both tunnels. Namely, an interest was given to the prediction of dispersion of emissions leaving both tunnel and the area touched by the traffic. For the CFD predictions, a method previously developed for moving vehicles was used. The method uses combination of Eulerian and Lagrangian approaches to moving objects and is capable of modeling different speeds and traffic rates of cars as well as traffic-induced turbulence. Influence of several meteorological parameters was studied, namely wind speed and direction and traffic parameters, like traffic rates and speed of cars. The method separates contributions from different sources to the total concentration field, namely from background, tunnel outlet and roadway. Results are presented in the form of horizontal and vertical concentration fields of NOx.

English abstract

Concentration fields of different pollutants that spread outside two road tunnels predicted with a CFD code will be presented. The solution domain represents the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The vicinity of both tunnels is a heavily built up area with tall buildings forming typical street canyons. The CFD modelling predicts the situation after the tunnel Mrazovka will be finished and traffic will increase considerably between both tunnels. Namely, an interest was given to the prediction of dispersion of emissions leaving both tunnel and the area touched by the traffic. For the CFD predictions, a method previously developed for moving vehicles was used. The method uses combination of Eulerian and Lagrangian approaches to moving objects and is capable of modeling different speeds and traffic rates of cars as well as traffic-induced turbulence. Influence of several meteorological parameters was studied, namely wind speed and direction and traffic parameters, like traffic rates and speed of cars. The method separates contributions from different sources to the total concentration field, namely from background, tunnel outlet and roadway. Results are presented in the form of horizontal and vertical concentration fields of NOx.

Keywords

CFD modelling, Eulerian-Lagrangian approach, moving vehicles, pollutants dispersion, urban air quality, vehicular tunnels

RIV year

2002

Released

01.11.2002

Pages from

445

Pages to

457

Pages count

13

BibTex


@article{BUT40982,
  author="Jaroslav {Katolický} and Jiří {Pospíšil} and Miroslav {Jícha}",
  title="CFD Prediction of Air Quality in the Area between Two City Vehicular Tunnels Considering Moving Cars",
  annote="Concentration fields of different pollutants that spread outside two road tunnels predicted with a CFD code will be presented. The solution domain represents the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The vicinity of both tunnels is a heavily built up area with tall buildings forming typical street canyons. The CFD modelling predicts the situation after the tunnel Mrazovka will be finished and traffic will increase considerably between both tunnels. Namely, an interest was given to the prediction of dispersion of emissions leaving both tunnel and the area touched by the traffic. For the CFD predictions, a method previously developed for moving vehicles was used. The method uses combination of Eulerian and Lagrangian approaches to moving objects and is capable of modeling different speeds and traffic rates of cars as well as traffic-induced turbulence. Influence of several meteorological parameters was studied, namely wind speed and direction and traffic parameters, like traffic rates and speed of cars. The method separates contributions from different sources to the total concentration field, namely from background, tunnel outlet and roadway. Results are presented in the form of horizontal and vertical concentration fields of NOx.",
  chapter="40982",
  journal="Water,Air and soil pollution:Focus",
  number="2",
  volume="2002",
  year="2002",
  month="november",
  pages="445--457",
  type="journal article"
}