A Comprehensive study on simulation of turbulent combustion using modified perfectly stirred reactor model

Different versions of Perfectly Stirred Reactor (PSR) have been examined in the simulationof a methane-air jet flame, Sandia flame D. These models have been incorporated with a turbulent mixing based combustion model, Eddy Dissipation Concept (EDC), to address the interaction between turbulentflow field and chemical reactions. Turbulentsmall scale effects weremodeled using Reynolds Average Navier Stokes (RANS) approach. A reduced chemical mechanism (DRM) was used in order to calculate the species reaction rates. Velocity profiles werein good agreement with experimental data. The modified model applied the effect of turbulent mixing by altering the PSR’s species transport equation. Using the modified model resulted in an inevitableenhancement on the reactive scalar’s distribution along the central axis. However the distribution of the scalarshowed a slight over-prediction at the flamelocation, which was originated from using the reduced mechanism. The model capability in predicting the turbulent flame interaction was examined using a Computational Fluid Dynamic (CFD) toolbox, OpenFOAM