Showing results for: atmospheric dispersion modeling Articles
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A comparison of wind-tunnel experiments and computational simulations of dispersion in the environs of buildings
A comparison is made between wind-tunnel experiments and computer (CFD) simulations of the dispersion of buoyant and dense gas releases, close to one or more buildings. The simulations were undertaken on a work-station platform, using a standard commercial CFD code, and were subject to realistic constraints on run-times and model sizes. Good agreement is found for the simplest case, although it ...
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Gaseous pollutant dispersion around urban-canopy elements: wind tunnel case studies
There is an evident lack of reliable and detailed in situ measurement data for verifying numerical predictions of atmospheric dispersion in the urban environment on sub-meso scales. Wind-tunnel studies of dispersion around typical elements of the urban canopy (isolated buildings, groups of buildings, street canyons) could provide valuable substitutes for field datasets. They can achieve a high ...
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Local mass transfer coefficients over idealised two–dimensional urban street canyons
In view of the large number of urban inhabitants, ventilation and pollutant transport in urban areas are major research problems for several decades. This paper focuses on the studies of the correlation between the ventilation and pollutant removal over idealised two–dimensional urban street canyons using wind tunnel experiments in the Department of Mechanical Engineering, The University of Hong ...
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