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首页> 外文会议>International Conference on Structures and Building Materials >Numerical Simulation of Traffic Emissions in Urban Street Canyon
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Numerical Simulation of Traffic Emissions in Urban Street Canyon

机译：城市街道峡谷交通排放的数值模拟

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Dispersion of gaseous pollutant emissions in different street canyons was studied using two dimensional sections of canyon models airflow. Effects of building size, street width wind velocity and different turbulent model on the pollutant transport were examined. Depending on wind speed, building height, and street width, it was found that large recirculation regions in canyons may form. Under certain conditions, gaseous pollutants emitted from vehicle exhaust may trap inside the street canyon. It was shown that the amount of pollutants in street canyons reduces when the wind speed increases. The simulation results were compared with the available wind tunnel experiments and favorable agreement was found.
机译：使用峡谷模型气流的二维部分研究了不同街道峡谷中气态污染物排放的分散。检查了建筑物尺寸，街道宽风速度和不同湍流模型对污染物运输的影响。根据风速，建筑物高度和街道宽度，发现峡谷中的大型再循环区域可能形成。在某些条件下，从车辆排气发出的气态污染物可以在街道峡谷内陷阱。结果表明，当风速增加时，街道峡谷中的污染物量减少了。将仿真结果与可用的风洞实验进行比较，发现有利的协议。

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