Urban Geometry and Wind Simulation Studies for Comfort in Bangkok Street Canyon

摘要：

　　The increase of densely built-up areas in Bangkok aggravates Urban Heat Island phenomenon.Urban geometry as formed by the relationship of building height and street width or height-to-width ratio is a contributing factor to UHI.While the street canyon can provide self-shading during the day which is good for hot-humid regions,the deep street canyon influences heat absorption and airflow in the city,resulting in trapping air pollutants especially at the pedestrian level.Therefore,it is important to find optimum urban geometry for thermal comfort and enhancing airflow for public health.Wind studies were conducted using CFD simulation for uniform urban block arrays.Heightto-width ratios were varied for 95 cases.Results show that height-to-width ratios ranging from 1 to 2 can generate turbulence for heat mitigation and air pollution dispersion.The minimum height-to-width ratio recommended is 0.5 while the minimum building height is 9 meters.The minimum road width recommended is 12 m.However,the width of 34 m is preferable for heat mitigation and promoting air circulation.

关键词： urban geometry wind simulation street canyon

作者: Pattaranan TAKKANON

作者单位: Kasetsart University,Thailand

会议类型: 国际会议

会议名称: 2017世界可持续建筑环境大会(the World Sustainable Built Environment Conference)

会议地点: 香港

会议语种:英文

页码: 1061-1067

在线出版日期: 2017-06-05（万方平台首次上网日期，不代表论文的发表时间）