Change search
ReferencesLink to record
Permanent link

Direct link
Issues when linking computational fluid dynamics for urban modeling to toxic load models: The need for further research
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Process Metallurgy.
2015 (English)In: Atmospheric Environment, ISSN 1352-2310, Vol. 104, 112-124 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 104, 112-124 p.
Keyword [en]
Chemical hazard, Casualty assessments, Urban area, CFD, Toxic load
National Category
Environmental Sciences
URN: urn:nbn:se:kth:diva-162943DOI: 10.1016/j.atmosenv.2014.12.068ISI: 000350189000012ScopusID: 2-s2.0-84920921251OAI: diva2:800205

QC 20150402

Available from: 2015-04-02 Created: 2015-03-26 Last updated: 2015-04-02Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Jonsson, Lage
By organisation
Applied Process Metallurgy
In the same journal
Atmospheric Environment
Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 30 hits
ReferencesLink to record
Permanent link

Direct link