Radiation modeling associated with adaptive chemistry
Most industrial flames are turbulent, exhibit different zones with totally diverse chemistry and have radiation as the dominant heat transfer process. The S_4 quadrature version of the discrete ordinates radiation model was applied together with the Adaptive Chemistry (AdapChem) reduced kinetics modeling to a laboratory-scale, axisymmetric, co-flowing partially premixed methane/air laminar flame, previously predicted with success with AdapChem alone,to assess the effects of radiation on the distributions of other variables. Predicted results using the discrete ordinates method, that were compared herein with the experimental values reported in literature and with those predicted with AdapChem alone, showed that temperatures and species concentrations exhibit significant variations when radiation was considered. Nevertheless, the flame topology in terms of reaction structure remained essentially unchanged, although some differences were noticed. The predicted results approached more closely the experimental ones when radiation calculations were included.