Self-adaptive turbulence eddy simulation of a premixed jet combustor

The self-adaptive turbulence eddy simulation (SATES) is employed to investigate the lean premixed methane/air turbulent flame in a single-nozzle model gas turbine combustor, which high axial momentum jet issuing from an off-center nozzle facilitates development of large-scale, dominant lateral recirculation zone that stabilizes flame. For modeling, SATES method can dynamically adjust proportion resolving and modeling scales according local grid scale length scales, thus depressing gird-sensitivity large (LES) calculation. combustion thickened with reduced chemistry mechanism integrated into framework capture unsteady dynamics. accuracy results assessed against experimental data, as well ones LES detached (DES) this burner same grids. predicted large-scale flow field by significantly better than DES low mesh resolution. Detailed comparisons show adaptively improves degree near-wall improve prediction Similar LES, does not cause serious delay shear layer instability weakening wrinkle observed DES. study demonstrates suitability hybrid methods for complex simulations coupled suitable model.