Numerical Study of Hydrogen enrichment and injector nozzle number impacts on non-premixed turbulent combustion characteristics in a Gas Turbine cannular Combustion Chamber

A numerical study on non-premixed combustion methane/air mixture, Hydrogen enrichment and injector nozzle number in swirl combustor is investigated using the Computational Fluid Dynamics CFD code. The method is based on the solution of Navier-Stokes unsteady equations using unstructured grid due to the complexity of geometry of the combustor. The turbulence modeling is carried out by RNG/k-ε) turbulence model. The H2 amount in the fuel mixture varies under constant volumetric fuel flow between 0 and 40% and the injector nozzle number is 4, 6 and 8. Results of this simulation show as the hydrogen rate increases, flame temperature, CO increases and CO2 decreases. On the other hand, the injector nozzle number minimizes the NOx and increases the CO level.