Numerical Study of Traffic Pollutant Dispersion within Different Street Canyon Configurations

Table 1

Validation metrics for the model performance. Target values and accepted range are also illustrated here.

Metric	Aim	Range	Standard 𝑘-𝜀	RNG 𝑘-𝜀	Realizable 𝑘-𝜀
FB	0	|−0.3,0.3|	−0.017	−0.105	−0.036
RNMSE	0	<√1.5	0.557	0.662	0.659
𝑅	1	>0.8	0.912	0.886	0.877