Detail publikace

Modelování rozptylu emisí v mikroměřítku v městské zástavbě - nový přístup pomocí metody CFD.

KATOLICKÝ, J. JÍCHA, M. POSPÍŠIL, J.

Originální název

Modelování rozptylu emisí v mikroměřítku v městské zástavbě - nový přístup pomocí metody CFD.

Český název

Modelování rozptylu emisí v mikroměřítku v městské zástavbě - nový přístup pomocí metody CFD.

Anglický název

CFD Modeling of pollutants dispersion in a micro-scale urban area.

Typ

článek v časopise

Jazyk

cs

Originální abstrakt

In the contribution, concentration field of different pollutants predicted with a CFD code will be presented. The calculations are done with StarCD code into which a special subroutine for moving vehicles is integrated. This subroutine is based on 3-D Eulerian-Lagrangian approach to moving objects and is capable of taking into account the traffic induced flow rate and turbulence (see Jicha et al., 2000). The method has a significant advantage of separating contributions from different sources to a total concentration field of different pollutants. In such a way we are able to clearly determine what is the impact of tunnel outlets, line sources from vehicles moving along roads and what is the background. The method has been applied to prediction of concentration field of CO and NOx in the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The modeled area has dimensions approximately 600m x 600m and is situated between two hills. Both tunnel outlets are connected with two-way road having 4 traffic lane in total and two ramps. Predictions were done for different traffic situations at both tunnel portals (traffic rate and speed) and different wind direction and speed. Also the "no-wind" conditions were modelled and one situation in which the ventilation system inside the tunnel Mrazovka is out of order which results in the highest amount of polluted air leaving the tunnel outlet into the adjacent area. Results show a very different area affected by emissions leaving the tunnel outlets and emissions from the road line sources under different conditions and can help local authorities to assess the interaction between tunnels and surrounding.

Český abstrakt

In the contribution, concentration field of different pollutants predicted with a CFD code will be presented. The calculations are done with StarCD code into which a special subroutine for moving vehicles is integrated. This subroutine is based on 3-D Eulerian-Lagrangian approach to moving objects and is capable of taking into account the traffic induced flow rate and turbulence (see Jicha et al., 2000). The method has a significant advantage of separating contributions from different sources to a total concentration field of different pollutants. In such a way we are able to clearly determine what is the impact of tunnel outlets, line sources from vehicles moving along roads and what is the background. The method has been applied to prediction of concentration field of CO and NOx in the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The modeled area has dimensions approximately 600m x 600m and is situated between two hills. Both tunnel outlets are connected with two-way road having 4 traffic lane in total and two ramps. Predictions were done for different traffic situations at both tunnel portals (traffic rate and speed) and different wind direction and speed. Also the "no-wind" conditions were modelled and one situation in which the ventilation system inside the tunnel Mrazovka is out of order which results in the highest amount of polluted air leaving the tunnel outlet into the adjacent area. Results show a very different area affected by emissions leaving the tunnel outlets and emissions from the road line sources under different conditions and can help local authorities to assess the interaction between tunnels and surrounding.

Anglický abstrakt

In the contribution, concentration field of different pollutants predicted with a CFD code will be presented. The calculations are done with StarCD code into which a special subroutine for moving vehicles is integrated. This subroutine is based on 3-D Eulerian-Lagrangian approach to moving objects and is capable of taking into account the traffic induced flow rate and turbulence (see Jicha et al., 2000). The method has a significant advantage of separating contributions from different sources to a total concentration field of different pollutants. In such a way we are able to clearly determine what is the impact of tunnel outlets, line sources from vehicles moving along roads and what is the background. The method has been applied to prediction of concentration field of CO and NOx in the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The modeled area has dimensions approximately 600m x 600m and is situated between two hills. Both tunnel outlets are connected with two-way road having 4 traffic lane in total and two ramps. Predictions were done for different traffic situations at both tunnel portals (traffic rate and speed) and different wind direction and speed. Also the "no-wind" conditions were modelled and one situation in which the ventilation system inside the tunnel Mrazovka is out of order which results in the highest amount of polluted air leaving the tunnel outlet into the adjacent area. Results show a very different area affected by emissions leaving the tunnel outlets and emissions from the road line sources under different conditions and can help local authorities to assess the interaction between tunnels and surrounding.

Rok RIV

2003

Vydáno

01.03.2003

Nakladatel

Občanské sdružení Ochrana kvality ovzduší

Místo

Praha

Strany od

6

Strany do

13

Strany počet

8

BibTex


@article{BUT41959,
  author="Jaroslav {Katolický} and Miroslav {Jícha} and Jiří {Pospíšil}",
  title="Modelování rozptylu emisí v mikroměřítku v městské zástavbě - nový přístup pomocí metody CFD.",
  annote="In the contribution, concentration field of different pollutants predicted with a CFD code will be presented. The calculations are done with StarCD code into which a special subroutine for moving vehicles is integrated. This subroutine is based on 3-D Eulerian-Lagrangian approach to moving objects and is capable of taking into account the traffic induced flow rate and turbulence (see Jicha et al., 2000). The method has a significant advantage of separating contributions from different sources to a total concentration field of different pollutants. In such a way we are able to clearly determine what is the impact of tunnel outlets, line sources from vehicles moving along roads and what is the background. 
The method has been applied to prediction of concentration field of CO and NOx in the city area located between two tunnel outlets - tunnel Strahov and tunnel Mrazovka in Prague. The modeled area has dimensions approximately 600m x 600m and is situated between two hills. Both tunnel outlets are connected with two-way road having 4 traffic lane in total and two ramps. Predictions were done for different traffic situations at both tunnel portals (traffic rate and speed) and different wind direction and speed. Also the "no-wind" conditions were modelled and one situation in which the ventilation system inside the tunnel Mrazovka is out of order which results in the highest amount of polluted air leaving the tunnel outlet into the adjacent area. Results show a very different area affected by emissions leaving the tunnel outlets and emissions from the road line sources under different conditions and can help local authorities to assess the interaction between tunnels and surrounding.",
  address="Občanské sdružení Ochrana kvality ovzduší",
  chapter="41959",
  institution="Občanské sdružení Ochrana kvality ovzduší",
  journal="Ochrana ovzduší",
  number="3",
  volume="2003",
  year="2003",
  month="march",
  pages="6",
  publisher="Občanské sdružení Ochrana kvality ovzduší",
  type="journal article"
}