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Numerical and Experimental Studies on Flow and Pollutant Dispersion in Urban Street Canyons

机译:城市街道峡谷内径流和污染物扩散的数值和实验研究

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摘要

在这研究,数字模拟和水坦克实验被用来在一个城市的街峡谷调查流动和污染物质分散。峡谷几何学的二种类型被测试。研究显示在一个加速槽口峡谷(峡谷的下游的方面上的更高的大楼),在上游的更低的大楼的高度和形状在流动模式和污染物质分散起一个重要作用,当时在一个电压降低的槽口峡谷(下游的方面上的更低的大楼),下游地更低的大楼几乎没有小影响。研究也证明为峡谷的一个方面上的平行六面体大楼的高塔的替换可以提高污染物质集中由机动车辆射出的街通风和减少。
机译:In this study numerical simulations and water tank experiments were used to investigate the flow and pollutant dispersion in an urban street canyon. Two types of canyon geometry were tested. The studies indicate that in a step-up notch canyon (higher buildings on the downstream side of the canyon), the height and shape of the upstream lower buildings plays an important role in flow pattern and pollutant dispersion,while in a step-down notch canyon (lower buildings on the downstream side), the downstream lower buildings have little influence. The studies also show that the substitution of tall towers for parallelepiped buildings on one side of the canyon may enhance the street ventilation and decrease the pollutant concentration emitted by motor vehicles.

著录项

  • 来源
    《大气科学进展(英文版)》 |2007年第1期|111-125|共15页
  • 作者

  • 作者单位

    Department of Atmospheric Sciences School of Physics Peking University Beijing 100871;

    The State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry LAPC Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029;

    State Key Laboratory of Turbulence Research Peking University Beijing 100871;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 大气科学(气象学);
  • 关键词

    urban street canyon; numerical simulation; water tank experiment; pollutant dispersion;

    机译:城市街道峡谷;数值模拟水箱实验;污染物扩散;
  • 入库时间 2022-08-19 04:36:40
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