A technical gas turbine combustor has been studied in detail with optical diagnostics for validation of large-eddy simulations (LES). chemiluminescence, OH laser-induced fluorescence (LIF) and particle image velocimetry (PIV) have been applied to stable and pulsating flames up to 8 bar. The combination of all results yielded good insight into the combustion process with this type of burner and forms a database that was used for the validation of complex numerical combustion simulations. LES, including radiation, convective cooling, and air cooling, were combined with a reduced chemical scheme that predicts emissions. Good agreement of the calculated flame position and shape with experimental data was found.
Issue Section:
Gas Turbines: Combustion and Fuel
Keywords:
gas turbine combustor,
laser diagnostics,
thermoacoustics,
numerical simulation,
gas turbines,
combustion,
fluorescence,
flames,
convection,
cooling,
air pollution control,
numerical analysis
Topics:
Combustion chambers,
Flames,
Gas turbines,
Lasers,
Pressure,
Flow (Dynamics),
Fuels,
Combustion
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