Recent Advances in Rotating Detonation Combustion and Aeroacoustics Research
Tid: To 2025-04-10 kl 10.30 - 11.30
Plats: Faxén, Teknikringen 8
Medverkande: Prof. Ephraim J. Gutmark (University of Cincinnati, USA)
- Flame Stabilization via Rotating Detonation in Flow-through RDC
This research investigates the feasibility and benefits of employing rotating detonation combustion (RDC) to stabilize secondary combustion. A broad range of parameters was explored to elucidate the coupling between detonation waves and core flow combustion. The most extensive operational map was achieved using hot core airflow combined with heated RDC air. Advanced diagnostics—PLIF and chemiluminescence—quantified the interaction between the detonation wave and core combustion. Additionally, a water-cooled combustor enabled extended operation, yielding an improved operational map compared to traditional short-duration ignitability tests. - Noise Suppression in Supersonic Non-Circular Single and Twin-Jets
This study focuses on noise mitigation through microjet fluidic injection in non-circular single and twin-jet configurations. Far-field and near-field acoustic measurements, complemented by visualization techniques such as Particle Image Velocimetry (PIV) and Schlieren imaging, were used to capture the flow dynamics and acoustic interactions. Various injection strategies were evaluated for their impact on mixing noise and shock-associated noise components. The results indicate that the flow path upstream of the nozzle significantly influences both the flow and acoustic characteristics of these jets.