CFD study of different radiation models for industrial combustion modeling

In the present study, combustion process in one of the industrial furnaces of South Pars Gas Complex (SPGC) has been studied using Computational Fluid Dynamic (CFD) technique. In orderto obtain the flow pattern, Navier- Stokes equations were solved for 634248 control volumessimultaneously. The k − equation was used to model the turbulence in the flow domain and the combustion process was considered as Non-premixed combustion. Three radiation modelsincluding DOM, DTRM, and P-1were applied to model the radiation mechanism of heat transferin the combustion chamber and their effect on the temperature profile and species concentration in the furnace were compared. Also, in order to validate the modeling results, the temperature andcomponent mole fractions at the stack outlet were compared with the industrial data and a fairlygood agreement was observed. The result of P-1 model showed a better temperature profile and H2O mole fraction as a flue gas in comparison with other models. The results of all models were nearly equal for the predicted N2 and O2 concentration profiles

Keywords:

Combustion , Modeling , Industrial Furnace , CFD , SPGC