DOI: 10.1016/j.atmosenv.2015.08.003
Scopus记录号: 2-s2.0-84940744952
论文题名: A CFD study on the effectiveness of trees to disperse road traffic emissions at a city scale
作者: Jeanjean A ; P ; R ; , Hinchliffe G ; , McMullan W ; A ; , Monks P ; S ; , Leigh R ; J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 120 起始页码: 1
结束页码: 14
语种: 英语
英文关键词: Computational Fluid Dynamics (CFD)
; Dispersion modeling
; OpenFOAM
; Road side
Scopus关键词: Air pollution
; Forestry
; Optical radar
; Photolithography
; Pollution
; Roads and streets
; Transportation
; Trees (mathematics)
; Urban planning
; Wind tunnels
; 3d representations
; Air pollutant concentrations
; Ambient concentrations
; Dispersion modeling
; OpenFOAM
; Pollution dispersion
; Road traffic emissions
; Software platforms
; Computational fluid dynamics
; atmospheric pollution
; building
; computational fluid dynamics
; concentration (composition)
; database
; dispersion
; lidar
; pollutant transport
; road
; roadside environment
; software
; street canyon
; traffic emission
; wind forcing
; wind tunnel
; air pollutant
; air pollution
; Article
; building
; city
; city planning
; computational fluid dynamics
; computer program
; controlled study
; data base
; methodology
; pedestrian
; priority journal
; sensitivity analysis
; simulation
; statistical analysis
; traffic
; tree
; urban area
; wind
; Air Pollution
; Buildings
; Concentration
; Emission
; Trees
; England
; Leicester [England]
; United Kingdom
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: This paper focuses on the effectiveness of trees at dispersing road traffic emissions on a city scale. CFD simulations of air-pollutant concentrations were performed using the OpenFOAM software platform using the k-. ε model. Results were validated against the CODASC wind tunnel database before being applied to a LIDAR database of buildings and trees representing the City of Leicester (UK). Most other CFD models in the literature typically use idealised buildings to model wind flow and pollution dispersion. However, the methodology used in this study uses real buildings and trees data from LIDAR to reconstruct a 3D representation of Leicester City Centre. It focuses on a 2 × 2 km area which is on a scale larger than those usually used in other CFD studies. Furthermore, the primary focus of this study is on the interaction of trees with wind flow dynamics. It was found that in effect, trees have a regionally beneficial impact on road traffic emissions by increasing turbulence and reducing ambient concentrations of road traffic emissions by 7% at pedestrian height on average. This was an important result given that previous studies generally concluded that trees trapped pollution by obstructing wind flow in street canyons. Therefore, this study is novel both in its methodology and subsequent results, highlighting the importance of combining local and regional scale models for assessing the impact of trees in urban planning. © 2015 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81511
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom; Bluesky International Limited, Old Toy Factory, Jackson Street, Coalville, United Kingdom; Department of Engineering, University of Leicester, Leicester, United Kingdom; Department of Chemistry, University of Leicester, Leicester, United Kingdom
Recommended Citation:
Jeanjean A,P,R,et al. A CFD study on the effectiveness of trees to disperse road traffic emissions at a city scale[J]. Atmospheric Environment,2015-01-01,120