Numerical Study on the Effect of Driving Distance on the Diffusion of PM2.5 in the Street

  • Peng Xu
  • Mengru Wang
  • Xi LuEmail author
  • Junru Han
  • Qin Gu
  • Chen Ma
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 617)


The influence of inter-vehicle distance on the diffusion process of PM2.5 in the underlay surface of urban streets is studied. Firstly, the diffusion process of tracer gas PM2.5 is simulated using CFD, and the emission factors of PM2.5 under different vehicle types and speeds is analyzed and summarized. Then, using the improved MIRA vehicle model, a PM2.5 diffusion model of the traveling vehicle at different intervals was established. In the end, POST post-processing was applied to the model, and the PM2.5 concentration field cloud map and the velocity field cloud map around the vehicle body were compared and analyzed to obtain the diffusion rule of PM2.5 emission from the vehicle exhaust gas.


Driving distance PM2.5 Numerical simulation Tracer gas 



Supported by the natural science foundation of Jiangsu: (No. BK20151497).


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Peng Xu
    • 1
  • Mengru Wang
    • 1
  • Xi Lu
    • 2
    Email author
  • Junru Han
    • 1
  • Qin Gu
    • 1
  • Chen Ma
    • 3
  1. 1.College of Civil and Transportation EngineeringHohai UniversityNanjingChina
  2. 2.China Urban Sustainable Transport Research Center China Academy of Transportation ScienceBeijingChina
  3. 3.School of AstronauticsHarbin Institute of Technology (HIT)HarbinChina

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