Identification of Wind-Induced Particle Resuspension in Urban Environment Using CFD Modelling

Air pollution caused by particulate matter (PM) is a current problem in many cities. With the introduction of strict emission limits and electric cars, lower particle production expected future. However, there are sources particles that cannot be easily influenced. These include resuspension, where deposited on surfaces re-enter air, causing multiple times. Resuspension can account for up to 18% total emissions some cases. The present paper focuses use computational fluid dynamics (CFD) tools describe flow street canyon resuspension wind occurs. Based calculated flow, model applied see occurs how far travel. shear stresses character field boundary layer evaluated. Different building configurations parameters tested using simple 2D model. makes it possible which parts occur. It shows leave only from conditions suitable resuspension. then enter mainstream. most stay canyon, cause pollute air repeatedly. This effect have severe impact human health. dispersion urban environment results may useful cities clean streets, as clear areas will benefit cleaning.