RT Journal Article SR Electronic A1 Pospisil, J. A1 Jicha, M. T1 Behavior of Particulate Matter Produced by Cars in a Regional Model of Urban Canopy Layer JF Transactions on Transport Sciences YR 2008 VO 1 IS 4 SP 157 OP 164 DO 10.5507/tots.2008.021 UL https://tots.upol.cz/artkey/tot-200804-0002.php AB This paper introduces the utilization of the CFD technique for the modeling of PM10 (particulate matter 10 μm) behavior in urban areas, focusing on a description of the processes in the ground surface boundary layer. A description of the deposition and resuspension processes is introduced and applied to the regional numerical model of the city of Brno. The threshold velocity of re-suspension was obtained from the small scale modeling of PM10 dispersion in a street gully located inside the regional model. The predicted concentration fields were compared with theoretical studies and an in-situ measurement.