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Volume 24 Issue 1

Jan.  2007

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2007 >  24(1): 111-125

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

  • 1.

    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,Department of Atmospheric Sciences, School of Physics, Peking University，Beijing 100871,State Key Laboratory of Turbulence Research, Peking University, Beijing 100871


doi: 10.1007/s00376-007-0111-0

  • 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.
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    [2] LIU Huizhi, LIANG Bin, ZHU Fengrong, ZHANG Boyin, SANG Jianguo, 2004: Water-Tank Experiment on the Thermal Circulation Induced by the Bottom Heating in an Asymmetric Valley, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 536-546.  doi: 10.1007/BF02915721
    [3] CHENG Xueling, HU Fei, 2005: Numerical Studies on Flow Fields Around Buildings in an Urban Street Canyon and Cross-Road, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 290-299.  doi: 10.1007/BF02918518
    [4] Jiang Weimei, Yu Hongbin, 1994: Study on the Thermal Internal Boundary Layer and Dispersion of Air Pollutant in Coastal Area by Numerical Simulation, ADVANCES IN ATMOSPHERIC SCIENCES, 11, 285-290.  doi: 10.1007/BF02658147
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    [6] YANG Jing, BAO Qing, JI Duoying, GONG Daoyi, MAO Rui, ZHANG Ziyin, Seong-Joong KIM, 2014: Simulation and Causes of Eastern Antarctica Surface Cooling Related to Ozone Depletion during Austral Summer in FGOALS-s2, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1147-1156.  doi: 10.1007/s00376-014-3144-1
    [7] BI Yun, CHEN Yuejuan, ZHOU Renjun, YI Mingjian, DENG Shumei, 2011: Simulation of the Effect of Water-vapor Increase on Temperature in the Stratosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 832-842.  doi: 10.1007/s00376-010-0047-7
    [8] Kong Fanyou, Huang Meiyuan, Xu Huaying, 1993: Three-Dimensional Numerical Simulations of the Effects of a Cold Water Surface on the Evolution and Propagation of Thunderstorms, ADVANCES IN ATMOSPHERIC SCIENCES, 10, 261-272.  doi: 10.1007/BF02658132
    [9] HU Dingzhu, TIAN Wenshou, XIE Fei, SHU Jianchuan, and Sandip DHOMSE, , 2014: Effects of Meridional Sea Surface Temperature Changes on Stratospheric Temperature and Circulation, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 888-900.  doi: 10.1007/s00376-013-3152-6
    [10] Hyo-Eun JI, Soon-Hwan LEE, Hwa-Woon LEE, 2013: Characteristics of Sea Breeze Front Development with Various Synoptic Conditions and Its Impact on Lower Troposphere Ozone Formation, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1461-1478.  doi: 10.1007/s00376-013-2256-3
    [11] ZHAO Haikun, WU Liguang*, and WANG Ruifang, 2014: Decadal Variations of Intense Tropical Cyclones over the Western North Pacific during 19482010, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 57-65.  doi: 10.1007/s00376-013-3011-5
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    [13] HU Wei, ZHONG Qin, 2010: Using the OSPM Model on Pollutant Dispersion in an Urban Street Canyon, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 621-628.  doi: 10.1007/s00376-009-9064-9
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    [15] Tianxue ZHENG, Yongbo TAN, Yiru WANG, 2021: Numerical Simulation to Evaluate the Effects of Upward Lightning Discharges on Thunderstorm Electrical Parameters, ADVANCES IN ATMOSPHERIC SCIENCES, 38, 446-459.  doi: 10.1007/s00376-020-0154-z
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    [18] ZHANG Ning, ZHU Lianfang, ZHU Yan, 2011: Urban Heat Island and Boundary Layer Structures under Hot Weather Synoptic Conditions: A Case Study of Suzhou City, China, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 855-865.  doi: 10.1007/s00376-010-0040-1
    [19] Xiaojuan LIU, Guangjin TIAN, Jinming FENG, Bingran MA, Jun WANG, Lingqiang KONG, 2018: Modeling the Warming Impact of Urban Land Expansion on Hot Weather Using the Weather Research and Forecasting Model: A Case Study of Beijing, China, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 723-736.  doi: 10.1007/s00376-017-7137-8
    [20] PAN Yang, YU Rucong, LI Jian, XU Youping, 2008: A Case Study on the Role of Water Vapor from Southwest China in Downstream Heavy Rainfall, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 563-576.  doi: 10.1007/s00376-008-0563-x
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    • Manuscript History

    Manuscript received: 10 January 2007
    Manuscript revised: 10 January 2007
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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

    • 1. 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,Department of Atmospheric Sciences, School of Physics, Peking University，Beijing 100871,State Key Laboratory of Turbulence Research, Peking University, Beijing 100871
    • Manuscript received: 2007-01-10
    • Manuscript revised: 2007-01-10

    Abstract: 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.

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