Mathematical modelling of glass melting furnace design with regard to NOx formation

A three-dimensional mathematical model for turbulent flow and combustion on the basis of turbulence/chemistry interactions and radiative heat transfer taking into account spectral effects of surrounding walls and combustion g ases is described. For this the transport equation for radiative intensity was split into different wavelength ranges. A block-structured finite volum e grid with local refinements was used to solve the governing equations. Th e calculation domain is subdivided into a number of subdomains which are li nked within the solver based on the Message Passing Interface library. Comp uted distributions of velocity, temperature, and heat fluxes are given. Res ults of a parametric study in a producing horseshoe furnace by increasing t he height of the furnace with regard to NOx concentration distributions are presented.