The assistant professorship was represented with four conference contributions at the Symposium of Thermoacoustics in Combustion 2025 in Trondheim (Norway):
- Ángel Brito Gadeschi presented his results from the experimental investigation of the flame dynamics of two H2 micromix burners. Although the two burner designs differ only in the geometric shape of the air injection, the burners exhibit different stability behavior under the same operating conditions.
- Thuy An Do presented a new methodology for resolving entropy waves using background-oriented schlieren (BOS). The integration of spectral proper orthogonal decomposition (SPOD) makes the evaluation more robust against disturbances such as vibrations. Additionally, the differential equation underlying the BOS method is solved directly in the frequency domain, which reduces the computational effort required for post-processing. The new methodology was applied in the dilution zone of a kerosene combustion chamber.
- Benjamin Kölbl presented his experimental findings from the flame dynamics of an H2 Rich-Quench-Lean (RQL) combustion chamber. While RQL combustion chambers are an established technology for kerosene, the use of H₂ presents new thermoacoustic challenges. The findings provide initial insights into the changed flame dynamics when using H₂.
- Jannes Papenbrock focused on the flame dynamics of the primary zone of the H2 RQL combustion chamber. By isolating this zone, the fundamental mechanisms of combustion in the primary zone can be better understood, and complex interactions between the primary and dilution zones can be excluded.
We are honoured to have the chance to contribute to the combustion research at SoTiC 2025 and are grateful for the lively exchange. We are already looking forward to the next edition in Berlin in 2027.