Mathematical modelling

Modelling of biomass combustion using Computational Fluid Dynamics (CFD) is covered in the chapter. The Reynolds-Averaged Navier-Stokes equations are outlined as well as turbulence-chemistry interactions. Modelling pulverised biomass particle combustion is outlined including the sub-models. These are particle motion, heat transfer, devolatilisation and char combustion. Modelling pulverised fuel co-firing in power stations is next considered using the methods outlined previously. Modelling fixed and fluidised bed combustion is then described. The application of these methods to model the emission of nitrogen and sulphur oxide emissions and aerosol pollutants is outlined.