Evaluation of turbulence from traffic using experimental data obtained in a street canyon
The present study analyses the influence of traffic-produced turbulence (TPT) on CO concentration using full-scale measurements obtained in Göttinger Strasse (Hannover, Germany). Cases with airflow within ±11.25° from the direction perpendicular to the street axis were used. The values C = Ci-Cb (Ci...
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2005
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09574352_v25_n1-4_p164_Mazzeo http://hdl.handle.net/20.500.12110/paper_09574352_v25_n1-4_p164_Mazzeo |
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paper:paper_09574352_v25_n1-4_p164_Mazzeo2023-06-08T15:56:33Z Evaluation of turbulence from traffic using experimental data obtained in a street canyon Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Traffic-produced turbulence Urban air quality Air pollution Air quality Carbon monoxide Roads and streets Vehicles Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Wind speed Atmospheric turbulence carbon monoxide air quality atmospheric pollution carbon monoxide street canyon traffic emission urban atmosphere air quality control airflow ambient air conference paper density exhaust gas experimentation measurement traffic urban area velocity The present study analyses the influence of traffic-produced turbulence (TPT) on CO concentration using full-scale measurements obtained in Göttinger Strasse (Hannover, Germany). Cases with airflow within ±11.25° from the direction perpendicular to the street axis were used. The values C = Ci-Cb (Ci is concentration measured inside the street canyon and Cb is the background concentration) were plotted against ambient wind speed (U) for different traffic volumes. For windward conditions, the data verified the form C ∝ U-m and for leeward situations, C ∝ (aU2+6V2)-1/2 (a is a function of street geometry, b depends on the characteristics of the vehicles and traffic density, V is the average vehicle speed). We obtained empirical expressions for b, for C/C0 (C0 is the concentration 'without' the influence of the TPT) and for a critical wind speed (UC) (which does aU C2 = bV2). The ratio C/C0 is 0.71 when U=UC, not depending on the traffic flow. Copyright © 2005 Inderscience Enterprises Ltd. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09574352_v25_n1-4_p164_Mazzeo http://hdl.handle.net/20.500.12110/paper_09574352_v25_n1-4_p164_Mazzeo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Traffic-produced turbulence Urban air quality Air pollution Air quality Carbon monoxide Roads and streets Vehicles Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Wind speed Atmospheric turbulence carbon monoxide air quality atmospheric pollution carbon monoxide street canyon traffic emission urban atmosphere air quality control airflow ambient air conference paper density exhaust gas experimentation measurement traffic urban area velocity |
| spellingShingle |
Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Traffic-produced turbulence Urban air quality Air pollution Air quality Carbon monoxide Roads and streets Vehicles Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Wind speed Atmospheric turbulence carbon monoxide air quality atmospheric pollution carbon monoxide street canyon traffic emission urban atmosphere air quality control airflow ambient air conference paper density exhaust gas experimentation measurement traffic urban area velocity Evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| topic_facet |
Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Traffic-produced turbulence Urban air quality Air pollution Air quality Carbon monoxide Roads and streets Vehicles Carbon monoxide concentration Pollutant dispersion Street canyon Traffic pollution Wind speed Atmospheric turbulence carbon monoxide air quality atmospheric pollution carbon monoxide street canyon traffic emission urban atmosphere air quality control airflow ambient air conference paper density exhaust gas experimentation measurement traffic urban area velocity |
| description |
The present study analyses the influence of traffic-produced turbulence (TPT) on CO concentration using full-scale measurements obtained in Göttinger Strasse (Hannover, Germany). Cases with airflow within ±11.25° from the direction perpendicular to the street axis were used. The values C = Ci-Cb (Ci is concentration measured inside the street canyon and Cb is the background concentration) were plotted against ambient wind speed (U) for different traffic volumes. For windward conditions, the data verified the form C ∝ U-m and for leeward situations, C ∝ (aU2+6V2)-1/2 (a is a function of street geometry, b depends on the characteristics of the vehicles and traffic density, V is the average vehicle speed). We obtained empirical expressions for b, for C/C0 (C0 is the concentration 'without' the influence of the TPT) and for a critical wind speed (UC) (which does aU C2 = bV2). The ratio C/C0 is 0.71 when U=UC, not depending on the traffic flow. Copyright © 2005 Inderscience Enterprises Ltd. |
| title |
Evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| title_short |
Evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| title_full |
Evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| title_fullStr |
Evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| title_full_unstemmed |
Evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| title_sort |
evaluation of turbulence from traffic using experimental data obtained in a street canyon |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09574352_v25_n1-4_p164_Mazzeo http://hdl.handle.net/20.500.12110/paper_09574352_v25_n1-4_p164_Mazzeo |
| _version_ |
1768544460004655104 |