北京大学学报(自然科学版)

建筑物对城市通风自净能力影响的数值试验

姜瑜君1,桑建国1,刘辉志2,张伯寅3   

  1. 1北京大学物理学院大气科学系,北京,100871;2中国科学院大气物理研究所,LAPC,北京,100029;3北京大学湍流与复杂系统研究国家重点实验室,北京,100871
  • 收稿日期:2003-08-29 出版日期:2005-01-20 发布日期:2005-01-20

Influences of Structures on Urban Ventilation: A Numerical Experiment

JIANG Yujun1, SANG Jianguo1, LIU Huizhi2, ZHANG Boyin3   

  1. 1Department of Atmospheric Science, School of Physics, Peking University, Beijing, 100871; 2LAPC, Institute of Atmospheric Physics, Chinese Academy, Beijing, 100029; 3State Key Laboratory of Turbulence Research, Peking University, Beijing, 100871
  • Received:2003-08-29 Online:2005-01-20 Published:2005-01-20

摘要: 应用城市气候数值模式,分别计算了3栋6层住宅楼和1栋20层住宅楼两类建筑形式产生的风场,以及在此风场中街道汽车尾气的浓度分布。计算结果表明在总建筑面积相同情况下,高层建筑周围环境的通风自净能力要优于多层建筑。

关键词: 城市通风能力, 城市气候模式, 流场, 浓度场

Abstract: The disturbed flow caused by three six-storied residential buildings and a twenty-storied tall tower, respectively, as well as the distribution of traffic tail gas from a nearby road, are simulated by using an urban climate model. The results show that with the same built areas the ventilation ability of the atmospheric environment around the tall tower is better than that around the multi-storied buildings.

Key words: urban ventilation, urban climate model, flow field, concentration distribution

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