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An application of ventilation efficiency concepts to the analysis of building density effects on urban flow and pollutant concentration
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2011 (English)In: International Journal of Environment and Pollution, ISSN 0957-4352, Vol. 47, no 1-4, 248-256 p.Article in journal (Refereed) Published
Abstract [en]

This paper is devoted to the study of flow and pollutant dispersion within different urban configurations by means of wind tunnel experiments and Computational Fluid Dynamics (CFD) simulations. The influence of the building packing density was evaluated in terms of ventilation efficiency. We found that air entering the array through the lateral sides and that leaving through the street roofs increased and the lateral spread of the pollutant released from a ground level line source decreased with increasing packing density. Ventilation efficiency concepts developed for indoor environments appear a promising tool for evaluating the urban air quality as well.

Place, publisher, year, edition, pages
2011. Vol. 47, no 1-4, 248-256 p.
Keyword [en]
CFD simulations, planar area index, ventilation efficiency, wind tunnel experiments, Area index, Computational fluid dynamics simulations, Density effects, Ground level, Indoor environment, Lateral spread, Packing density, Pollutant concentration, Pollutant dispersions, Urban air quality, Urban flow, Wind tunnel experiment, Atmospheric movements, Efficiency, Experiments, Pollution, Ventilation, Wind tunnels, Computational fluid dynamics, air quality, atmospheric pollution, pollutant transport, wind tunnel, air pollutant, air pollution, airflow, article, atmospheric dispersion, building, simulation, urban area, wind
National Category
Environmental Sciences
URN: urn:nbn:se:kth:diva-150185DOI: 10.1504/IJEP.2011.047339ISI: 000303788900022ScopusID: 2-s2.0-84862746273OAI: diva2:744277

QC 20140908

Available from: 2014-09-08 Created: 2014-09-01 Last updated: 2015-10-09Bibliographically approved

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Sandberg, Mats G.
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