DOI: 10.1016/j.atmosenv.2014.12.068
Scopus记录号: 2-s2.0-84920921251
论文题名: Issues when linking computational fluid dynamics for urban modeling to toxic load models: The need for further research
作者: Burman J ; , Jonsson L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 104 起始页码: 112
结束页码: 124
语种: 英语
英文关键词: Casualty assessments
; CFD
; Chemical hazard
; Toxic load
; Urban area
Scopus关键词: Chemical hazards
; Fluid dynamics
; Hazards
; Industrial chemicals
; Turbulence models
; Airborne chemicals
; Casualty assessments
; Flow statistics
; Load modeling
; Spatio-temporal fluctuations
; State of the art
; Uncertainty measures
; Urban areas
; Computational fluid dynamics
; toxic gas
; assessment method
; atmospheric pollution
; computational fluid dynamics
; concentration (composition)
; numerical model
; research work
; toxicity
; urban area
; urban pollution
; accident
; Article
; breathing rate
; building
; city
; computational fluid dynamics
; computer simulation
; dispersion
; exposure
; height
; human
; intoxication
; plume
; prediction
; priority journal
; toxicity
; urban area
; velocity
; wind
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: In order to predict casualties caused by chemical hazards in densely populated areas, state-of-the-art Computational Fluid Dynamic (CFD) techniques could be utilized together with toxic load models. In the current study, simulations of consequences of hypothetical releases of toxic gas in a city center are presented and discussed. CFD models that reproduce flow statistics would be most appropriate for this purpose since it could be expected that they will more realistically represent the environment. However, since concentration-peaks in the ever-present spatiotemporal fluctuations of airborne chemicals contribute so much to the toxic load, it is shown that straight-forward direct linking of a CFD model to a toxic load model is not a suitable approach for predicting consequences of a toxic release. Furthermore, it is demonstrated that the use of different turbulence models leads to different casualty assessments. Obviously, there is an urgent need to establish widely accepted methods, ideally with known uncertainty measures. Thus, further research in this area is of great importance. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81944
Appears in Collections: 气候变化事实与影响
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作者单位: FOI, Swedish Defence Research Agency, Division of CBRN Defence and Security, Umeå, Sweden; KTH, Royal Institute of Technology, Stockholm, Sweden
Recommended Citation:
Burman J,, Jonsson L. Issues when linking computational fluid dynamics for urban modeling to toxic load models: The need for further research[J]. Atmospheric Environment,2015-01-01,104