Combustion Characteristics of a Premixed Test Combustor for a Hydrogen-Fueled Micro-Gas Turbine.

Combustion characteristics of hydrogen–air premixed gas in a sub-millimeter scale catalytic combustor

A sub-millimeter scale catalytic combustor was fabricated. Platinum catalyst coated on a porous ceramics support was placed in the combustion chamber. The chamber, sized 10 10 1:5 mm was covered with a GaAs window which is transparent to infrared radiation. The conversion rate was measured using gas chromatography. The temperature distribution in the combustion chamber was measured with an infr...

Acoustic Behavior of a Partially-Premixed Gas Turbine Model Combustor

Combustion instabilities in gas turbine engines often give rise to acoustic resonances. These resonances occur as manifestations of different acoustic modes, of which a single or multiple modes may be present. In this work, the acoustic behavior of a model gas turbine combustor, developed at DLR Stuttgart by Meier, was investigated using both syn(thetic) gas and standard hydrocarbon fuels. Syng...

CFD Study on Hydrogen-Air Premixed Combustion in a Micro Scale Chamber

This paper reports a CFD modeling study to investigate the hydrogen-air mixture combustion in a micro scale chamber. Nine species with nineteen reversible reactions were considered in the premixed combustion model. The effect of operational and geometrical conditions including; combustor size, wall conductivity, reactant flow rates and hydrogen feed splitting on combustion stabilit...

Detection of lean blowout in a premixed gas-turbine model combustor based on nonlinear dynamics

A detection method of lean blowout in a laboratory-scale premixed gas-turbine model combustor has been proposed from a view point of nonlinear dynamics. The translation error, which quantifies the degree of the parallelism of trajectories in the phase space constructed from the time-series data of the combustion-chamber pressure fluctuations, is used as a detector in this work. The dynamic beha...

Large-eddy simulation analysis of turbulent combustion in a gas turbine engine combustor