Eintrag weiter verarbeiten
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions
Gespeichert in:
| Zeitschriftentitel: | Advances in Science and Research |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Advances in Science and Research, 11, 2014, 1, S. 89-91 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Copernicus GmbH
|
| Schlagwörter: |
| author_facet |
Du, T. Z. Liu, C.-H. Zhao, Y. B. Du, T. Z. Liu, C.-H. Zhao, Y. B. |
|---|---|
| author |
Du, T. Z. Liu, C.-H. Zhao, Y. B. |
| spellingShingle |
Du, T. Z. Liu, C.-H. Zhao, Y. B. Advances in Science and Research Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions Atmospheric Science Pollution Geophysics Ecological Modeling |
| author_sort |
du, t. z. |
| spelling |
Du, T. Z. Liu, C.-H. Zhao, Y. B. 1992-0636 Copernicus GmbH Atmospheric Science Pollution Geophysics Ecological Modeling http://dx.doi.org/10.5194/asr-11-89-2014 <jats:p>Abstract. In this study, the dispersion of chemically reactive pollutants is calculated by large-eddy simulation (LES) in a neutrally stratified urban canopy layer (UCL) over urban areas. As a pilot attempt, idealized street canyons of unity building-height-to-street-width (aspect) ratio are used. Nitric oxide (NO) is emitted from the ground surface of the first street canyon into the domain doped with ozone (O3). In the absence of ultraviolet radiation, this irreversible chemistry produces nitrogen dioxide (NO2), developing a reactive plume over the rough urban surface. A range of timescales of turbulence and chemistry are utilized to examine the mechanism of turbulent mixing and chemical reactions in the UCL. The Damköhler number (Da) and the reaction rate (r) are analyzed along the vertical direction on the plane normal to the prevailing flow at 10 m after the source. The maximum reaction rate peaks at an elevation where Damköhler number Da is equal or close to unity. Hence, comparable timescales of turbulence and reaction could enhance the chemical reactions in the plume. </jats:p> Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions Advances in Science and Research |
| doi_str_mv |
10.5194/asr-11-89-2014 |
| facet_avail |
Online Free |
| finc_class_facet |
Geologie und Paläontologie Physik Geographie |
| format |
ElectronicArticle |
| fullrecord |
blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNTE5NC9hc3ItMTEtODktMjAxNA |
| id |
ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNTE5NC9hc3ItMTEtODktMjAxNA |
| institution |
DE-Pl11 DE-Rs1 DE-105 DE-14 DE-Ch1 DE-L229 DE-D275 DE-Bn3 DE-Brt1 DE-Zwi2 DE-D161 DE-Gla1 DE-Zi4 DE-15 |
| imprint |
Copernicus GmbH, 2014 |
| imprint_str_mv |
Copernicus GmbH, 2014 |
| issn |
1992-0636 |
| issn_str_mv |
1992-0636 |
| language |
English |
| mega_collection |
Copernicus GmbH (CrossRef) |
| match_str |
du2014largeeddysimulationofpollutantdispersionfromagroundlevelareasourceoverurbanstreetcanyonswithirreversiblechemicalreactions |
| publishDateSort |
2014 |
| publisher |
Copernicus GmbH |
| recordtype |
ai |
| record_format |
ai |
| series |
Advances in Science and Research |
| source_id |
49 |
| title |
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_unstemmed |
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_full |
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_fullStr |
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_full_unstemmed |
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_short |
Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_sort |
large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| topic |
Atmospheric Science Pollution Geophysics Ecological Modeling |
| url |
http://dx.doi.org/10.5194/asr-11-89-2014 |
| publishDate |
2014 |
| physical |
89-91 |
| description |
<jats:p>Abstract. In this study, the dispersion of chemically reactive pollutants is calculated by large-eddy simulation (LES) in a neutrally stratified urban canopy layer (UCL) over urban areas. As a pilot attempt, idealized street canyons of unity building-height-to-street-width (aspect) ratio are used. Nitric oxide (NO) is emitted from the ground surface of the first street canyon into the domain doped with ozone (O3). In the absence of ultraviolet radiation, this irreversible chemistry produces nitrogen dioxide (NO2), developing a reactive plume over the rough urban surface. A range of timescales of turbulence and chemistry are utilized to examine the mechanism of turbulent mixing and chemical reactions in the UCL. The Damköhler number (Da) and the reaction rate (r) are analyzed along the vertical direction on the plane normal to the prevailing flow at 10 m after the source. The maximum reaction rate peaks at an elevation where Damköhler number Da is equal or close to unity. Hence, comparable timescales of turbulence and reaction could enhance the chemical reactions in the plume.
</jats:p> |
| container_issue |
1 |
| container_start_page |
89 |
| container_title |
Advances in Science and Research |
| container_volume |
11 |
| format_de105 |
Article, E-Article |
| format_de14 |
Article, E-Article |
| format_de15 |
Article, E-Article |
| format_de520 |
Article, E-Article |
| format_de540 |
Article, E-Article |
| format_dech1 |
Article, E-Article |
| format_ded117 |
Article, E-Article |
| format_degla1 |
E-Article |
| format_del152 |
Buch |
| format_del189 |
Article, E-Article |
| format_dezi4 |
Article |
| format_dezwi2 |
Article, E-Article |
| format_finc |
Article, E-Article |
| format_nrw |
Article, E-Article |
| _version_ |
1792338068430127118 |
| geogr_code |
not assigned |
| last_indexed |
2024-03-01T15:24:43.816Z |
| geogr_code_person |
not assigned |
| openURL |
url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=Large-eddy+simulation+of+pollutant+dispersion+from+a+ground-level+area+source+over+urban+street+canyons+with+irreversible+chemical+reactions&rft.date=2014-10-23&genre=article&issn=1992-0636&volume=11&issue=1&spage=89&epage=91&pages=89-91&jtitle=Advances+in+Science+and+Research&atitle=Large-eddy+simulation+of+pollutant+dispersion+from+a+ground-level+area+source+over+urban+street+canyons+with+irreversible+chemical+reactions&aulast=Zhao&aufirst=Y.+B.&rft_id=info%3Adoi%2F10.5194%2Fasr-11-89-2014&rft.language%5B0%5D=eng |
| SOLR | |
| _version_ | 1792338068430127118 |
| author | Du, T. Z., Liu, C.-H., Zhao, Y. B. |
| author_facet | Du, T. Z., Liu, C.-H., Zhao, Y. B., Du, T. Z., Liu, C.-H., Zhao, Y. B. |
| author_sort | du, t. z. |
| container_issue | 1 |
| container_start_page | 89 |
| container_title | Advances in Science and Research |
| container_volume | 11 |
| description | <jats:p>Abstract. In this study, the dispersion of chemically reactive pollutants is calculated by large-eddy simulation (LES) in a neutrally stratified urban canopy layer (UCL) over urban areas. As a pilot attempt, idealized street canyons of unity building-height-to-street-width (aspect) ratio are used. Nitric oxide (NO) is emitted from the ground surface of the first street canyon into the domain doped with ozone (O3). In the absence of ultraviolet radiation, this irreversible chemistry produces nitrogen dioxide (NO2), developing a reactive plume over the rough urban surface. A range of timescales of turbulence and chemistry are utilized to examine the mechanism of turbulent mixing and chemical reactions in the UCL. The Damköhler number (Da) and the reaction rate (r) are analyzed along the vertical direction on the plane normal to the prevailing flow at 10 m after the source. The maximum reaction rate peaks at an elevation where Damköhler number Da is equal or close to unity. Hence, comparable timescales of turbulence and reaction could enhance the chemical reactions in the plume. </jats:p> |
| doi_str_mv | 10.5194/asr-11-89-2014 |
| facet_avail | Online, Free |
| finc_class_facet | Geologie und Paläontologie, Physik, Geographie |
| format | ElectronicArticle |
| format_de105 | Article, E-Article |
| format_de14 | Article, E-Article |
| format_de15 | Article, E-Article |
| format_de520 | Article, E-Article |
| format_de540 | Article, E-Article |
| format_dech1 | Article, E-Article |
| format_ded117 | Article, E-Article |
| format_degla1 | E-Article |
| format_del152 | Buch |
| format_del189 | Article, E-Article |
| format_dezi4 | Article |
| format_dezwi2 | Article, E-Article |
| format_finc | Article, E-Article |
| format_nrw | Article, E-Article |
| geogr_code | not assigned |
| geogr_code_person | not assigned |
| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNTE5NC9hc3ItMTEtODktMjAxNA |
| imprint | Copernicus GmbH, 2014 |
| imprint_str_mv | Copernicus GmbH, 2014 |
| institution | DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15 |
| issn | 1992-0636 |
| issn_str_mv | 1992-0636 |
| language | English |
| last_indexed | 2024-03-01T15:24:43.816Z |
| match_str | du2014largeeddysimulationofpollutantdispersionfromagroundlevelareasourceoverurbanstreetcanyonswithirreversiblechemicalreactions |
| mega_collection | Copernicus GmbH (CrossRef) |
| physical | 89-91 |
| publishDate | 2014 |
| publishDateSort | 2014 |
| publisher | Copernicus GmbH |
| record_format | ai |
| recordtype | ai |
| series | Advances in Science and Research |
| source_id | 49 |
| spelling | Du, T. Z. Liu, C.-H. Zhao, Y. B. 1992-0636 Copernicus GmbH Atmospheric Science Pollution Geophysics Ecological Modeling http://dx.doi.org/10.5194/asr-11-89-2014 <jats:p>Abstract. In this study, the dispersion of chemically reactive pollutants is calculated by large-eddy simulation (LES) in a neutrally stratified urban canopy layer (UCL) over urban areas. As a pilot attempt, idealized street canyons of unity building-height-to-street-width (aspect) ratio are used. Nitric oxide (NO) is emitted from the ground surface of the first street canyon into the domain doped with ozone (O3). In the absence of ultraviolet radiation, this irreversible chemistry produces nitrogen dioxide (NO2), developing a reactive plume over the rough urban surface. A range of timescales of turbulence and chemistry are utilized to examine the mechanism of turbulent mixing and chemical reactions in the UCL. The Damköhler number (Da) and the reaction rate (r) are analyzed along the vertical direction on the plane normal to the prevailing flow at 10 m after the source. The maximum reaction rate peaks at an elevation where Damköhler number Da is equal or close to unity. Hence, comparable timescales of turbulence and reaction could enhance the chemical reactions in the plume. </jats:p> Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions Advances in Science and Research |
| spellingShingle | Du, T. Z., Liu, C.-H., Zhao, Y. B., Advances in Science and Research, Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions, Atmospheric Science, Pollution, Geophysics, Ecological Modeling |
| title | Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_full | Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_fullStr | Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_full_unstemmed | Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_short | Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_sort | large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| title_unstemmed | Large-eddy simulation of pollutant dispersion from a ground-level area source over urban street canyons with irreversible chemical reactions |
| topic | Atmospheric Science, Pollution, Geophysics, Ecological Modeling |
| url | http://dx.doi.org/10.5194/asr-11-89-2014 |