Large eddy simulation of the aerodynamic effects of trees on pollutant concentrations in street canyons

Salim Mohamed Salim, Riccardo Buccolieri, Andrew Chan, Silvana Di Sabatino, Siew Cheong Cheah

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper presents numerical simulations of the aerodynamic effects of trees on the flow field and dispersion of trafficoriginated pollutants in an urban street canyon of W/H = 1 with a perpendicular approach flow. Large Eddy Simulation (LES) is employed for the investigation and is validated against wind tunnel (WT) experiment. Comparisons is made between an empty street canyon and one containing avenue-like tree planting of pore volume, Pvol = 96%. In the presence of trees, both measurements and simulations show considerably larger pollutant concentrations near the leeward wall and slightly lower concentrations near the windward wall in comparison to the tree-free case.
Original languageEnglish
Pages (from-to)17-24
Number of pages8
JournalProcedia Environmental Sciences
Volume4
DOIs
Publication statusPublished - 2011

Keywords

  • Street canyons
  • Trees
  • Air pollution
  • CFD
  • LES

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