DOI: 10.1016/j.atmosenv.2015.10.027
Scopus记录号: 2-s2.0-84945133877
论文题名: CFD simulation of short-range plume dispersion from a point release in an urban like environment
作者: Kumar P ; , Feiz A ; -A ; , Ngae P ; , Singh S ; K ; , Issartel J ; -P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 122 起始页码: 645
结束页码: 656
语种: 英语
英文关键词: CFD modeling
; Fluidyn-PANACHE
; MUST field experiment
; Short-range dispersion
; Urban dispersion
Scopus关键词: Air quality
; Air quality standards
; Boundary conditions
; Quality control
; Sampling
; Urban planning
; CFD modeling
; Field experiment
; Fluidyn-PANACHE
; Short range dispersion
; Urban dispersion
; Computational fluid dynamics
; air quality
; atmospheric plume
; boundary condition
; computational fluid dynamics
; concentration (composition)
; dispersion
; hazardous waste
; point source pollution
; policy making
; prediction
; three-dimensional modeling
; urban pollution
; air quality
; Article
; computational fluid dynamics
; controlled study
; plume dispersion
; priority journal
; sample size
; simulation
; statistical analysis
; urban area
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: An accurate simulation of the short-range plume dispersion of a hazardous pollutant in a geometrically complex urban region is a prerequisite in emergency preparedness and to assist regulators for developing effective policies. This study critically examines the real predictive capability of a three-dimensional Computational Fluid Dynamics (CFD) model, Fluidyn-PANACHE, to apply it in emergency contexts of an accidental or deliberate airborne release in urban regions. The model is evaluated with the Mock Urban Setting Test (MUST) field experiment of a continuous point source release in an idealized urban geometry of a regular array of shipping containers in various atmospheric stability varying from neutral to stable, and very stable conditions. The simulations are performed using three combinations (cases 1, 2, & 3) of inflow boundary conditions for wind and turbulence profiles. A detailed analysis with statistical measures shows that the performance of the Fluidyn-PANACHE against MUST experiment with all the three cases of the inflow boundary conditions is well achieved within the acceptable standards for air quality applications. The model with three cases 1, 2, & 3 predicts respectively 52.8%, 59.9%, and 67.9% of the total concentrations within a factor of two and shows an overall under-prediction. The sampling line maximum concentrations are better simulated by the CFD model with case-3 (95% within a factor of two) in comparison to other cases 1 & 2. A comparative statistical analysis is also performed with other evaluation studies in the literature for the averaged and sampling line maximum concentrations. The present evaluation of the Fluidyn-PANACHE strengthen the evidence that it is capable of dealing properly with the dispersion phenomena in geometrically complex urban environments. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81363
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: LMEE, Universite D'Evry-Val d'Essonne, 40 Rue Du Pelvoux, Courcouronnes, France; Centre d'Etudes du Bouchet, 5 Rue Lavoisier BP 3, Vert le Petit, France
Recommended Citation:
Kumar P,, Feiz A,-A,et al. CFD simulation of short-range plume dispersion from a point release in an urban like environment[J]. Atmospheric Environment,2015-01-01,122