| 街道峡谷地面源污染物扩散规律的风洞试验研究 |
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| 引用本文： | 周洪昌,高延令,吴晓琰. 街道峡谷地面源污染物扩散规律的风洞试验研究[J]. 环境科学学报, 1994, 14(4): 389-396 |
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| 作者姓名： | 周洪昌 高延令 吴晓琰 |
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| 作者单位： | 同济大学道路与交通工程系，吉林工业大学交通学院 |
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| 摘 要： | 在风洞中１／２５０街道峡谷模型的底板内释放示踪气体，通过对浓度分布特征的观测，分析了街道峡谷 面湖泊污染物的扩散过程及其与街道建筑物结构，风向及排放源强度等因素之间的关系，探讨了中性边界层风洞模拟微尺度湍流扩散过程的相似准则与相似参数，为建立街道峡谷地面源污染物扩散模型提供了物理基础。
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| 关 键 词： | 街道峡谷 风洞试验 扩散模型 空气污染 污染物 |
| 收稿时间： | 1993-06-30 |
A WINDTUNNEL INVESTIGATION ON DISPERSION OF SURFACE EMITTED POLLUTANTS IN A STREET CANYON |
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| Zhou Hongchang,Gao Yanling and Wu Xiaoyan. A WINDTUNNEL INVESTIGATION ON DISPERSION OF SURFACE EMITTED POLLUTANTS IN A STREET CANYON[J]. Acta Scientiae Circumstantiae, 1994, 14(4): 389-396 |
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| Authors: | Zhou Hongchang Gao Yanling Wu Xiaoyan |
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| Affiliation: | Department of Road and Traffic Engineering, Tongji University Portation, Shanghai 200092,College of Transportation, Jilin University of Technology, Changchun 130025 and College of Transportation, Jilin University of Technology, Changchun 130025 |
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| Abstract: | A windtunnel investigation on dispersion of surface emitted pollutants ina urban street canyon is reported. The investigation concentrates on the mior-oscale factors, such as wind direction and architectural geometry, which haveinfluence on the dispersion process. The similarity criteria and the experimenttechniqus for simulating microscale turbulent dispersion in a bandary-layer-windtunnel are also discussed. This investigation provides a physical founda-tion for the dispersion model of urban street canyon. |
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| Keywords: | street canyon air pollution windtunnel investigation dis-persion model. |
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