An application of ventilation efficiency concepts to the analysis of building density effects on urban flow and pollutant concentration

• 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.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering (hsv//eng)

Nyckelord

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

Publikations- och innehållstyp

ref (ämneskategori)

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