Mathematical modelling of turbulent reacting plumes – modelling of particulate matter processes

Summarization: This work presents an approach for modelling photochemical gaseous and aerosol phase processes in subgrid plumes from major localized (e.g. point) sources (``plume-in-grid'' modelling). This approach employs the Reactive Plume Model (RPM-AERO) which extends the regulatory model RPM-IV by incorporating aerosol processes and heterogeneous chemistry. The physics and chemistry of elemental carbon, organic carbon, sulphate, sodium, chloride and crustal material of aerosols are treated and attributed to the PM size distribution. A modified version of the Carbon Bond IV chemical mechanism is included to model the formation of organic aerosol. Aerosol dynamics modelled include mechanisms of nucleation, condensation and gas/particle partitioning of organic matter. Comparison of the model with field data from a power plant plume in Mohave (Nevada) is quite satisfactoryΠαρουσιάστηκε στο: EMEP-WMO Workshop on fine particles – emissions, modelling and measurement