Simulation Of The Wall Temperature Influence OnFlows And Dispersion Within Street Canyons
Simulation Of The Wall Temperature Influence OnFlows And Dispersion Within Street Canyons
复制标题
壁温对街道峡谷内流动和扩散影响的模拟
DOI：
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发表时间：
1970
期刊：
影响因子：
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通讯作者：
M. Jobert
中科院分区：
文献类型：
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作者：
P. Mestayer;J. Sini;M. Jobert
本文通过系统的数值模拟研究了几何参数和微气象参数对街谷内流场结构及其与大气交换污染物能力的影响。虽然Oke推广的流态分类已被证明可以相对较好地描述屋顶上方最低层的大气流动，但在街道峡谷内，需要基于大漩涡的布置进行第二次分类，以使污染物在街道内扩散并向外扩散。此外，壁面温度似乎有显着的影响，在街道流的制度和垂直交换与大气。
The influence of geometrical and micro-meteorological parameters on the structure of the flows within street canyons and their capability to exchange pollutants with the atmosphere is studied by means of systematic numerical simulations. While the flow regime classification popularized by Oke has been shown to relatively well chracterize the atmospheric flows in the lowest layer over the roofs, within the street canyons a second classification based on the arrangement of the large vortices is needed to render pollutant dispersion within the streets and outwards. In addition, wall temperature appears to have significant influence on in-street flow regimes and vertical exchanges with the atmosphere.