Research Article

Numerical Study of Traffic Pollutant Dispersion within Different Street Canyon Configurations

Figure 1

The simulated normalized concentration distributions and the velocity streamline patterns of different k-ε turbulence models. (a) The standard k-ε model, (b) the RNG k-ε model, and (c) the realizable k-ε model. The locations of measurement are indicated by the crosses in (d), and the source is shown by the black dot in the middle of the street canyon. The red dash line plot in (d) indicates the route of sampling for validation, while the blue number shows the distance (mm) along the sampling route from the upper corner point ( and ) of the leeward side of the upstream building.
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(a)
458671.fig.001b
(b)
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(c)
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(d)