CFD simulations for placement of air intakes on buildings and pollutant re-ingestion in the urban environment (original) (raw)

Abstract

The current work analyses the dispersion of pollutants in the near-field of a building with a roof exhaust stack for various building configurations. Through computational fluid dynamics (CFD) simulations, geometric parameters of adjacent buildings, such as height, length, width and spacing between buildings were evaluated. The study analyses, in qualitative terms, the impact of those geometric characteristics the risk of pollutant re-ingestion on buildings near the source. The main objective of the study is to suggest safe placement of air intakes on buildings facades in order to avoid or limit pollutant re-ingestion for different building configurations. The criterion for acceptability of safe intake placements was defined as the spatial location where normalized dilution, DN, is at least equal to 6. This value represents the acceptable threshold to avoid odors and occupational health effects for a large group of chemicals. In total, 25 different building configurations were simul...

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