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Integrating CFD and GIS into the Development of Urban Ventilation Corridors: A Case Study in Changchun City, China

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  • Shouzhi Chang

    (College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
    Changchun Institute of Urban Planning and Design, Changchun 130000, China)

  • Qigang Jiang

    (College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China)

  • Ying Zhao

    (Changchun Institute of Urban Planning and Design, Changchun 130000, China)

Abstract

Given the situation of urban expansion and environmental deterioration, the government and researchers are paying considerable attention to ventilation corridors. The construction of urban ventilation corridors requires quantitative data support. Computational fluid dynamics (CFD) has advantages in the fine assessment of wind environment, and a geographic information system (GIS) has excellent performance in spatial analysis. With Changchun City used as an example, this study proposes the establishment of ventilation corridors on an urban scale to mitigate the urban-heat-island effect, and to accelerate the diffusion of air pollution. CFD simulations provided detailed spatiotemporal characteristics of wind speed and wind direction at various heights. These simulations were useful for identifying potential ventilation corridors. In general, the wind-speed and wind-direction characteristics at a height of 30 m clearly indicated potential ventilation corridors. Potential paths existed in the leading wind and south–north directions. The areas that required improvement were favorably situated in the path of potential ventilation corridors. The main roads, green spaces, and water had good connectivity. A total of five ventilation corridors were constructed, and they will directly affect the poor urban thermal environment, and enhance the mobility of air.

Suggested Citation

  • Shouzhi Chang & Qigang Jiang & Ying Zhao, 2018. "Integrating CFD and GIS into the Development of Urban Ventilation Corridors: A Case Study in Changchun City, China," Sustainability, MDPI, vol. 10(6), pages 1-16, May.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:6:p:1814-:d:149875
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    References listed on IDEAS

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