Near-wall dispersion, deposition and transformation of particles in automotive exhaust gas aftertreatment systems

Finally, the possibility to use the model for in-situ characterization of particulate matter is demonstrated. For the first time, data is presented to support the hypothesis that differences in particle properties, as characterized in this way, have a meaningful correlation to particle reactivity in e.g. oxidation experiments. In other words, particle reactivity may be assessed indirectly by investigations of particle mobility. It is also shown how the pressure drop through a bed of deposited nanoparticles will differ depending on the properties of the deposited particles, as characterized by the conceptual model.