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A Numerical Study of the Flow and Pollutant Dispersion in Valley-River Urban

Air flow and pollutant dispersion characteristics in a real valley city are studied under the real boundary condition. The 3D computational fluid dynamics using Reynolds-averaged Navier-Stokes modeling was carried out in Lanzhou which is a typical valley city in Northwest, China. The standard κ­-ε t... Full description

Journal Title: Advanced Materials Research 2013-01-11, Vol.645, p.208-216
Main Author: Huang, Rong
Other Authors: Wang, Naiang
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1022-6680
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recordid: cdi_proquest_miscellaneous_1793265781
title: A Numerical Study of the Flow and Pollutant Dispersion in Valley-River Urban
format: Article
creator:
  • Huang, Rong
  • Wang, Naiang
subjects:
  • Air flow
  • Computational fluid dynamics
  • Dispersions
  • Mathematical models
  • Navier-Stokes equations
  • Nitrogen dioxide
  • Pollutants
  • Valleys
ispartof: Advanced Materials Research, 2013-01-11, Vol.645, p.208-216
description: Air flow and pollutant dispersion characteristics in a real valley city are studied under the real boundary condition. The 3D computational fluid dynamics using Reynolds-averaged Navier-Stokes modeling was carried out in Lanzhou which is a typical valley city in Northwest, China. The standard κ­-ε turbulence model as a simplified computational fluid dynamics model is used to provide moderately fast simulations of turbulent airflow in an urban environment. The modeled flow field indicated that the geometry, wind direction and source location had a significant effects on the flow field. The flow shows the funnelling is rather obvious when the wind flow through the narrow area in the middle of the city. It is obvious that in the high-altitude region, due to the impact of high and low differential pressure and terrain, SO2 and NO2 formed two cyclic concentration field in the dispersion process.
language: eng
source:
identifier: ISSN: 1022-6680
fulltext: no_fulltext
issn:
  • 1022-6680
  • 1662-8985
  • 1662-8985
url: Link


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titleA Numerical Study of the Flow and Pollutant Dispersion in Valley-River Urban
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descriptionAir flow and pollutant dispersion characteristics in a real valley city are studied under the real boundary condition. The 3D computational fluid dynamics using Reynolds-averaged Navier-Stokes modeling was carried out in Lanzhou which is a typical valley city in Northwest, China. The standard κ­-ε turbulence model as a simplified computational fluid dynamics model is used to provide moderately fast simulations of turbulent airflow in an urban environment. The modeled flow field indicated that the geometry, wind direction and source location had a significant effects on the flow field. The flow shows the funnelling is rather obvious when the wind flow through the narrow area in the middle of the city. It is obvious that in the high-altitude region, due to the impact of high and low differential pressure and terrain, SO2 and NO2 formed two cyclic concentration field in the dispersion process.
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languageeng
subjectAir flow ; Computational fluid dynamics ; Dispersions ; Mathematical models ; Navier-Stokes equations ; Nitrogen dioxide ; Pollutants ; Valleys
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jtitleAdvanced Materials Research
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notesSelected, peer reviewed papers from the 2013 International Conference on Intelligent System, Applied Materials and Control Technology (GSAMCT 2013), January 13-15, 2013, Taiyuan, Shanxi, China
abstractAir flow and pollutant dispersion characteristics in a real valley city are studied under the real boundary condition. The 3D computational fluid dynamics using Reynolds-averaged Navier-Stokes modeling was carried out in Lanzhou which is a typical valley city in Northwest, China. The standard κ­-ε turbulence model as a simplified computational fluid dynamics model is used to provide moderately fast simulations of turbulent airflow in an urban environment. The modeled flow field indicated that the geometry, wind direction and source location had a significant effects on the flow field. The flow shows the funnelling is rather obvious when the wind flow through the narrow area in the middle of the city. It is obvious that in the high-altitude region, due to the impact of high and low differential pressure and terrain, SO2 and NO2 formed two cyclic concentration field in the dispersion process.
doi10.4028/www.scientific.net/AMR.645.208