Large Eddy Simulation of Flow Dynamics and Velocity Fields in a Gas Turbine Combustor with a Swirl Flame

فاقد چكيده فارسي

Recent developments in numerical simulations, turbulent combustion models and the regular increase of computing power permit Large Eddy Simulation (LES) to be applied to chemical reactor engineering. LES shows the potential of the approach in the industrial combustors but are more difficult to validate due to the limited set of available measurements. The numerical modeling of gas turbine combustor with a swirl flame were performed for CH4/air flow with a swirl flames. The flow dynamics and velocity fields were numerically studied and the results compared with the experimental data obtained from laser measurements. Two- and three-dimensional CFD simulations were performed with consideration of a two-step oxy-combustion reaction kinetics model. The Eddy Dissipation Concept (EDC) combustion model was used in the numerical analysis. The numerical results obtained by EDC model were in good agreement with the experimental data. However, an error analysis showed that the simulated mean velocity components obtained by 3-D geometry were more consistent with the experimental data than those obtained by 2-D geometry.