[1]袁磊,宛杨,何成.基于CFD模拟的高密度街区交通污染物分布[J].深圳大学学报理工版,2019,(No.3(221-346)):274-280.[doi:10.3724/SP.J.1249.2019.03229]
 YUAN Lei,WAN Yang,et al.Distribution of traffic pollutants in high-density blocks based on CFD simulation[J].Journal of Shenzhen University Science and Engineering,2019,(No.3(221-346)):274-280.[doi:10.3724/SP.J.1249.2019.03229]
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基于CFD模拟的高密度街区交通污染物分布
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
期数:
2019年No.3(221-346)
页码:
274-280
栏目:
【土木建筑工程】
出版日期:
2019-05-30

文章信息/Info

Title:
Distribution of traffic pollutants in high-density blocks based on CFD simulation
作者:
袁磊12宛杨12何成12
1)深圳大学建筑与城市规划学院,广东深圳518060;2) 深圳市建筑环境优化设计研究重点实验室, 广东深圳 518060
Author(s):
YUAN Lei1 2 WAN Yang1 2 and HE Cheng1 2
1) College of Architecture and Urban Plan , Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China 2) Shenzhen Key Laboratory for Optimizing Design of Built Environment , Shenzhen 518060, Guangdong Province, P.R.China
关键词:
城市设计高密度城市污染物扩散CFD模拟空气品质街区形态
Keywords:
urban design high-density city contaminant diffusion CFD simulation air quality block form
分类号:
TU201.4
DOI:
10.3724/SP.J.1249.2019.03229
文献标志码:
A
摘要:
高密度城市街区的空间特征对其内部交通污染物的浓度分布有显著影响.为研究高密度城市街区中交通污染物扩散和分布的影响因素,建立了深圳市某高密度街区的空间模型.以东北、西南偏南两个典型风向上模拟的PM2.5和氮氧化合物浓度作为交通污染物积累的量化指标,采用计算流体动力学(computational fluid dynamics,CFD)模拟的方法对室外交通污染物的扩散进行数值模拟.结果表明,道路上的交通污染物浓度明显高于建筑组团内部的;尽管污染物的排放可能会引起街区内某些位置的污染物累积,但城市绿化和城市通风廊道等开放空间可能会促进交通污染物的稀释;建筑物形态以及下冲风对交通污染物的扩散有影响.
Abstract:
The geometry of high-density urban space has a significant impact on the distribution of internal traffic pollutants. In order to study the influencing factors of the accumulation of traffic pollutants in high-density urban blocks, we establish a spatial model of high-density blocks in Shenzhen to simulate the spread of outdoor traffic pollutants by computational fluid dynamics (CFD). The concentrations of PM2.5 and NOx are assigned as indicators of traffic pollutant accumulation and simulations have been conducted in the northeast and the south by southwest wind direction scenarios. The results reveals that the concentrations of traffic pollutants on the roads are significantly higher than those inside the building groups;Although pollutant emission may probably induce pollutant accumulation in some parts of the blocks, the open spaces such as greenbelts and urban ventilating corridors may facilitate the dilution of traffic pollutants;It is also shown that the building shapes, the downward wind also have different impacts on the dilution effect of traffic pollutants.

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更新日期/Last Update: 2019-04-22