Yunwei Zhang, Zhaolin Gu , Chuck Wah Yu

  • School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi’an 710049, China

Received: May 24, 2016
Revised: October 16, 2016
Accepted: October 26, 2016
Download Citation: ||  

  • Download: PDF

Cite this article:
Zhang, Y., Gu, Z. and Yu, C.W. (2017). Large Eddy Simulation of Vehicle Induced Turbulence in an Urban Street Canyon with a New Dynamically Vehicle-Tracking Scheme. Aerosol Air Qual. Res. 17: 865-874.


  • VIT in urban street canyons is studied with a new developed scheme by LES.
  • Moving vehicles are dynamically tracked on multi traffic lanes.
  • The vehicle induced drag force on surrounding air is formulated.
  • LES results are compared with theoretical and experimental VIT models.
  • The instantaneous air flow fields within the street canyon were investigated.



Moving vehicles could have a considerable influence on air flow and turbulence within urban street canyons, especially the vehicle induced turbulence (VIT), which is an important consideration for pollutants’ dispersion and local air quality management. To simulate air flow in urban street canyons with moving vehicles, an Euler-Lagrangian method was further developed by this study. The method involved dynamically tracking each moving vehicle and determining the vehicle induced drag force on surrounding air. Simulations under different background wind velocities and vehicle speeds show that, moving vehicles could pose a strong effect on wind turbulence, but have a lesser effect on average wind field within a street canyon. The presence of VIT was mainly in the lower areas of a street canyon. The average standard deviation of velocity (σw0) in the lower areas is about 0.5 m s–1. In comparison with theoretical and experimental VIT models, VIT values produced by our simulations were higher than those obtained by experimental model, and were slightly lower than those produced by theoretical model. Instantaneous air flow fields within a street canyon were also investigated. Our results have indicated that the existence of local eddies could be a contribution factor to VIT.

Keywords: Street canyon; Vehicle induced turbulence; Wind field; Air quality management; Moving vehicles

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Call for Papers for the special issue on: "Carbonaceous Aerosols in the Atmosphere"

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.