Experimental investigation of adjacent flames interaction at different angles configuration of multi-burner arrangement
- Datum:ab sofort
Reduction of pollutant and noise emissions from aircraft engines below the targets of the ACARE flightpath 2050 with higher stability has attracted many researchers in the recent decade to represent the next generation of aero engines. To achieve this low pollution emissions limits, new innovative combustion technologies for aero-engines are needed.
For addressing these issues, a novel concept of Short Helical Combustor (SHC) combined with lifted flames arrangement, which has the potential to reduce pollutant emissions of aircraft, will be investigated. The major feature of SHC concept is that the primary axes of all burners are tilted in circumferential direction relative to the rotational axis of the gas turbine, which increases the stability limits of lifted flames. Inherent characteristics of such flames are the strongly reduced risk of flashback and reduced susceptibility to thermo-acoustics instabilities compared to conventional swirl stabilized flames.
At the first stage of the master thesis, the student is to be ensured of a full understanding of relevant phenomena, and how to operate the experimental setup as well as the measurement systems.
In this research, OH * -chemiluminescence measurement will be used to capture the flame front region to analyze the flame structure of the inclined combustor arrangement and to compare it with the arrangement. In addition, Particle image velocimetry (PIV) measurement will be used to obtain the instantaneous velocity field to enhance the understanding of relevant phenomena for the flame stability at different inclination angles.
Aufgabensteller: Prof. Dr.-Ing. Dimosthenis Trimis