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

摘要

Combustion-generated nanoparticles are present in exhaust gas aftertreatment systems in the approximate size range 1-1000 nm. Successful optimization of aftertreatment systems for pollution control relies on the existence of numerical tools to predict the momentum, heat and mass transfer between these types of particles and the surrounding gas phase. Such tools can only be readily obtained if our fundamental understanding of the phenomena pertaining to the particle behavior is correct.