用户登录
期刊信息
  • 主管单位:
  • 上海市教育委员会
  • 主办单位:
  • 上海理工大学
  • 主  编:
  • 庄松林
  • 地  址:
  • 上海市军工路516号
  • 邮政编码:
  • 200093
  • 联系电话:
  • 021-55277251
  • 电子邮件:
  • xbzrb@usst.edu.cn
  • 国际标准刊号:
  • 1007-6735
  • 国内统一刊号:
  • 31-1739/T
  • 邮发代号:
  • 4-401
  • 单  价:
  • 15.00
  • 定  价:
  • 90.00
任蘇琪,黄远东,崔鹏义.架空建筑街谷内流动与污染物扩散的数值模拟研究[J].上海理工大学学报,2021,43(4):368-377.
架空建筑街谷内流动与污染物扩散的数值模拟研究
Numerical simulation studies on airflow and pollutant dispersion in street canyons with void decks
投稿时间:2020-11-02  
DOI:10.13255/j.cnki.jusst.20201102001
中文关键词:  街道峡谷  数值模拟  架空结构  高宽比  气流流动  污染物扩散
英文关键词:street canyon  numerical simulation  void deck  aspect ratio  airflow  pollutant dispersion
基金项目:国家自然科学基金资助项目(51536006);上海市科学创新行动计划(20dz1204008);上海市青年科技扬帆计划(18YF1417600)
作者单位E-mail
任蘇琪 上海理工大学 环境与建筑学院上海 200093  
黄远东 上海理工大学 环境与建筑学院上海 200093  
崔鹏义 上海理工大学 环境与建筑学院上海 200093 pycui@usst.edu.cn 
摘要点击次数: 42
全文下载次数: 66
中文摘要:
      研究架空建筑设计对街道峡谷内气流流动和污染物扩散规律的影响。考虑了4种不同街谷高宽比(H/W)和3种架空建筑类型,利用经风洞实验验证的CFD数值模型对上述街谷内流动与污染物扩散规律进行模拟研究。结果表明,在无架空街谷中,H/W的增大不利于街谷内污染物扩散。与无架空街谷相比,架空结构显著改善了街谷内的空气质量。两侧建筑架空结构比单侧建筑架空结构更有利于街谷内污染物扩散,上游建筑架空结构对街谷内污染物的稀释作用优于下游建筑架空结构。当两侧建筑架空时,街谷内污染物可降低90%以上。架空结构显著增强了街谷近地面的气流流速,改善了街谷内的空气质量。
英文摘要:
      To explore the influence of the structure of buildings with void decks on the airflow and pollutant dispersion in street canyons, CFD (computational fluid dynamics) numerical models validated by the wind-tunnel tests were employed by considering four aspect ratios (H/W) and three configurations of buildings with void decks. The results show that the increase of H/W is not conducive to the dispersion of pollutants in the street canyon without any void decks. Compared with the street canyon without any void decks, the structures of building with void decks observable improves the air quality in street canyons. The structure of buildings with void decks on both sides is more propitious to the dispersion of pollutants in the street canyon than the structure of building with a void deck on one side, and the dilution effect of the structure of upstream building with a void deck on the pollutants in the street canyon is better than that of the structure of downstream building with a void deck. The pollutant concentration in the street canyon with void decks at buildings on both sides is reduced by more than 90%. Therefore, the structures of buildings with void decks significantly enhances the airflow in the area near the ground and improves the air quality in street canyons.
HTML   查看全文  查看/发表评论  下载PDF阅读器