This action is being carried out by the Atmospheric Pollution and Ecotoxity Modelling Unit of the Environment Department of CIEMAT.
A Computational Fluid Dynamics (CFD) model is used to simulate the dispersion of reactive atmospheric pollutants and the nitrogen oxide (NO) deposition effect on a photocatalytic surface in urban settings. Action B5 focuses on modelling the dispersion of NO and NO2 in determined conditions, registered in the experimental campaigns carried out in Action B4. Action B5 has been divided into three phases:
Phase I figuresFigure 1. Geometry of the computational domain of the area in Alcobendas and zoom in Paseo de la Chopera where the experimental field investigation is carried out (Action B4). The region in red represents the location of the emissions and the yellow region is the area of the photocatalytic material. Figure 2. Concentration of NO and NO2 in average ppb during the whole hour from 12.00UTC to 13.00 UTC at the measurement points. Figure 3. Concentration of NO and NO2 in ppb at 13.00 UTC at a 1m height in the study region Figure 4. Differences in NO concentration with and without photocatalytic asphalt(difNOphot = NOnoPhot - NOwithFot) at 13.00 UTC. Figure 5. Vertical profiles of NO concentration differences with and without photocatalytic asphalt (difNOphot = NOnoPhot - NOwithFot) in points 1-4 of the measurement at 13.00 UTC