主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报

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建筑物对称性对大气输移特性影响的模拟研究

陈义胜;庞赟佶;闫永旺   

  1. 内蒙古科技大学能源与环境学院 内蒙古包头014010
  • 收稿日期:2007-12-21 修回日期:2008-02-27 出版日期:2008-04-01 发布日期:2008-04-01

Numerical simulation of the effects of building symmetry on the airflow field and pollutant distribution

CHEN Yi-sheng PANG Yun-ji YAN Yong-wang   

  1. College of Energy and Environment;Inner Mongolia University of Science & Technology;Baotou 014010;China
  • Received:2007-12-21 Revised:2008-02-27 Online:2008-04-01 Published:2008-04-01

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摘要： 运用修正的k-ε双方程湍流模型分别对非对称性建筑物和对称性建筑物周围的流场和污染物浓度场进行模拟,计算出地面风速为3 m/s时不同建筑物周围的流场与污染物浓度场分布。结果表明:建筑物的形状对建筑物周围风场和污染物浓度场有明显的影响,不同形状建筑物尾流区形态各不相同。数值模拟结果对研究建筑物周围的传输特性有一定的指导意义,并对污染物的扩散机理进行了探讨。

关键词: 建筑物对称性, 大气传输, k-ε模型, 尾流, 浓度场, 模拟研究

Abstract: Based on the modified k-ε turbulence model,airflow field and pollutant concentration field around dissymmetry and symmetry buildings were simulated.Airflow field and pollutant concentration field around the different buildings were calculated when the wind speed reaches 3 m/s.The results indicate that the building shapes can influence obviously wind field and pollutant concentration field around the buildings.The characteristics of wake regions are different for the different building shapes.The numerical simulation results are significant to research the transfer characteristics around buildings.Finally,the diffusion mechanisms of pollutants are also discussed.