Fundamental numerical studies of thermal stratification effects in idealized urban areas: Weakly unstable thermal stratification effects on the elongated roll-structures downstream of a high-rise building, and its potential effect on pollutant dispersion in urban areas

Pollution in urban environments is increasingly becoming a major concern for our societies which, together with the increasingly powerful capabilities provided by computational fluid dynamics (CFD), has made pollution dispersion a common topic of research during the last two decades. Several factors are relevant to the dispersion of pollutants...

Ventilation efficiency of street canyons with intersections

When looking at domains with several building densities, the resulting average concentrations caused by traffic when unknown, are often linearised between known building densities. To verify if this assumption is correct, several cases of street canyons with intersections, are simulated using the DALESURBAN model. The traffic is represented by a...