Experimental investigations and laser based validation measurements in a gas turbine model combustor

Duan, Xuru; Weigand, Peter; Meier, Wolfgang; Keck, O.; Stricker, W.; Aigner, Manfred; Lehmann, B.

doi:10.1504/pcfd.2004.004085

Cited by 20 publications

(16 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of particular practical relevance are thermo-acoustic instabilities which can arise from the interaction of the heat release rate, the flow field and the combustor geometry [1][2][3][4][5]. Further effects which limit the exploitation of the full potential of lean premixed combustion are unmixedness of fuel and air [6,7], unsteady flame stabilization [8] or hydrodynamic instabilities [9,10]. In general, GT-like flames are highly turbulent and exhibit strong effects of turbulence-chemistry interactions like ignition delay or local flame extinction [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

PIV, 2D-LIF and 1D-Raman measurements of flow field, composition and temperature in premixed gas turbine flames

Stopper

Aigner

et al. 2010

Experimental Thermal and Fluid Science

Self Cite

View full text Add to dashboard Cite

a b s t r a c tSeveral laser diagnostic measurement techniques have been applied to study the lean premixed natural gas/air flames of an industrial swirl burner. This was made possible by equipping the burner with an optical combustion chamber that was installed in the high-pressure test rig facility at the DLR Institute of Combustion Technology in Stuttgart. The burner was operated with preheated air at various operating conditions with pressures up to p = 6 bar and a maximum thermal power of P = 1 MW.The instantaneous planar flow field inside the combustor was studied with particle image velocimetry (PIV). Planar laser induced fluorescence (PLIF) of OH radicals on a single-shot basis was used to determine the shape and the location of the flame front as well as the spatial distribution of reaction products. 1D laser Raman spectroscopy was successfully applied for the measurement of the temperature and the concentration of major species under realistic gas turbine conditions.Results of the flow field analysis show the shape and the size of the main flow regimes: the inflow region, the inner and the outer recirculation zone. The highly turbulent flow field of the inner shear layer is found to be dominated by small and medium sized vortices. High RMS fluctuations of the flow velocity in the exhaust gas indicate the existence of a rotating exhaust gas swirl. From the PLIF images it is seen that the primary reactions happened in the shear layers between inflow and the recirculation zones and that the appearance of the reaction zones changed with flame parameters. The results of the multiscalar Raman measurements show a strong variation of the local mixture fraction allowing conclusions to be drawn about the premix quality. Furthermore, mixing effects of unburnt fuel and air with fully reacted combustion products are studied giving insights into the processes of the turbulence-chemistry interaction.

show abstract

Section: Introductionmentioning

confidence: 99%

PIV, 2D-LIF and 1D-Raman measurements of flow field, composition and temperature in premixed gas turbine flames

Stopper

Aigner

et al. 2010

Experimental Thermal and Fluid Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although developed and operated as a laboratory-scale burner, this design is based on a modified gas turbine combustor [59] using liquid fuels and two swirling air flows which operated in counter-direction to each other [60]. As such, this burner has also been referred to in the literature as the DLR Dual-Swirl Gas Turbine Model Combustor (GTMC) [61,62].…”

Section: Dual Swirl Burnermentioning

confidence: 99%

“…The mass flow of air through the annular swirling air stream exceeds the flow through the jet-like (central) port by 50% in some test cases (Flame-A, -B and -C) [65]. Between these two streams, fuel is injected via 72 channels (0.5mm x 0.5mm) which is believed to provide better fuel stream symmetry compared to a continuous annular ring of 0.5mm slit width [59]. To facilitate studies of instability, phase locked acquisition of the velocity (LDV), temperature and species-field (Raman, PLIF) have been undertaken and phase locked to microphone measurements to resolve both the phases of the combustor (x>0mm) and plenum (x<0mm) [66,67].…”

Section: Dual Swirl Burnermentioning

confidence: 99%

Review of laboratory swirl burners and experiments for model validation

Al-Abdeli

Masri

2015

Experimental Thermal and Fluid Science

View full text Add to dashboard Cite

“…For systematic studies of the underlying fundamental processes especially the interaction of the local heat release rate with acoustic pressure oscillations, a laboratory-scale gas turbine model combustor has been developed by DLR. 22 The fuel nozzle as commonly utilized in a kerosene-fuelled gas turbine combustor was modified to allow the use of methane as fuel. The air was introduced through a central and a concentric nozzle surrounding the fuel inlet channels.…”

Section: Temperature Measurements Correlated With Other Quantities Fomentioning

confidence: 99%

Temperature measurements in combustion—not only with CARS: a look back at one aspect of the European CARS Workshop

Stricker

Lückerath

Meier

et al. 2003

J Raman Spectroscopy

Self Cite

View full text Add to dashboard Cite

Temperature is perhaps the most important quantity in combustion research and technology. The potential and state of the art of various laser-based diagnostics used for the determination of temperature in laboratory flames and practical combustion devices are discussed and illustrated with a few representative examples from our laboratory. The emphasis is on coherent anti-Stokes Raman scattering (CARS), the main topic of the European CARS Workshop in the past. As a result, CARS is today the most matured and proven technique for technical applications. In addition to CARS, however, linear laser spectroscopic methods also deliver valuable and supplementary information on temperature in combustion.

show abstract

Experimental investigations and laser based validation measurements in a gas turbine model combustor

Cited by 20 publications

References 5 publications

PIV, 2D-LIF and 1D-Raman measurements of flow field, composition and temperature in premixed gas turbine flames

PIV, 2D-LIF and 1D-Raman measurements of flow field, composition and temperature in premixed gas turbine flames

Review of laboratory swirl burners and experiments for model validation

Temperature measurements in combustion—not only with CARS: a look back at one aspect of the European CARS Workshop

Contact Info

Product

Resources

About