A key topic of our research is the investigation of combustion processes under gas turbine-relevant conditions. For this purpose, model combustors are employed that are designed for specific research tasks. In comparison to real gas turbine combustors, they are reduced in size and thermal load but feature their essential characteristics. The advantages of using model combustors instead of real ones are numerous: They are less expensive in manufacture and operation, exhibit better defined and reproducible boundary conditions, can more easily be modified and can be operated in the institute’s test rigs. A major advantage is that we can equip them with combustion chamber windows in order to investigate the combustion process with optical and laser-based techniques.
We are investigating different gas turbine model combustors, for example, with regard to pollutant formation, combustion instabilities, fuel flexibility or new combustion concepts. Their size ranges from burners of laboratory scale with approximately 10 kW power to combustors for high-pressure test rigs with up to 2 MW.