Self-excited flow oscillations such as the precessing vortex core (PVC) in swirl nozzle
combustion systems can significantly impact combustor operation by impacting unsteady …

View Video Presentation: https://doi. org/10.2514/6.2023-1061. vid The precessing vortex
core (PVC) is a self-excited flow oscillation in swirl nozzle combustors that can influence …

The precessing vortex core (PVC) is a coherent flow structure that is often encountered in
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …

In this study, we apply periodic flow excitation of the PVC at the centerbody of a generic swirl-
stabilized combustor to investigate the impact of the precessing vortex core (PVC) on flame …

The precessing vortex core (PVC) is a self-excited flow oscillation state occurring in swirl
nozzles. This is caused by the presence of a marginally unstable hydrodynamic helical …

Lean-premixed swirl-stabilized combustion is a successful strategy to reduce pollutant
emissions. However, these combustion systems are especially prone to thermoacoustic …

The precessing vortex core (PVC) represents a helical-shaped coherent flow structure
typically occurring in both reacting and nonreacting swirling flows. Until now, the …

The precessing vortex core (PVC) is a helically shaped coherent flow structure that occurs in
reacting and nonreacting swirling flows undergoing vortex breakdown. In swirl-stabilized …

The reduction of NOx emissions remains a driving factor in the design process of swirl-
stabilized combustion systems, to meet legislative restrictions. In reacting swirl flows …

Linear stability analysis is applied to a swirl-stabilized combustor flow with the aim to
understand how the flame shape and associated density field affects the manifestation of …