A pollution monitoring and modelling study has been carried out on a
low street canyon (height to width ratio = 0.53) in a suburb of Leeds,
Headingly with the aim of determining the micrometeorological influences
on pollution concentrations and dispersion. Pollution monitoring
was carried out under a variety of meteorological conditions, over ten
separate days using a mobile atmospheric unit and measurements were taken
for five pollutants, NO, NOx, CO, O3 and NO2,
along with three meteorological variables, wind direction, wind speed and
Two models have been employed to simulate the flow, turbulence and concentration fields within the canyon: the CFD model code, Fluent and the empirical air quality management package, Airviro.
The results showed
This study highlights the need for extensive experimental data, with measurements made at both side walls, from the base of the canyon up to the roof level, so that numerical models such as fluent can be correctly validated.