NOX EMISSIONS FROM WOOD STOVES - A CFD MODELLING APPROACH

The present paper addresses NOx emissions from wood stoves through a CFD modeling approach. In combustion of waste and biomass the most significant route for formation of NOx is fuel NOx. The formation of fuel NOx is very complex and sensitive to fuel composition. Thus, accurate predictions of fuel NOx formation in wood stoves, which constitute a wide range of compositions and states, rely heavily on the use of chemical kinetics with sufficient level of details. The computational fluid dynamics (CFD) simulations were performed using the k-epsilon turbulence model and the Eddy Dissipation Concept (EDC) by Magnussen [1][2] for turbulent combustion in conjunction with chemical reactions from a skeletal mechanism recently developed for biomass combustion [3]. The reaction mechanism includes 36 species. This work is a step in the development of a numerical tool required to study concept improvements with respect to NOx emissions from wood stoves.