Precessing vortex core (PVC), a typical vortex structure, universally exists in swirling flow
fields and originates from the Kelvin–Helmholtz instability of the swirling shear layer. In the …

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 …

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

The precessing vortex core (PVC) phenomenon in swirling jets is a helical instability in the
flow driven by the coherent precession of the vortex breakdown bubble (VBB) around the …

Large scale coherent structures play an important role in the behavior of the combustion
regime inside any type of combustor stabilized by swirl, with special impact on factors such …

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

This paper reports a detailed investigation of the interaction between a wall-bounded
precessing vortex core (PVC) occurring in swirling flows after vortex breakdown and a wall …

This paper reviews the occurrence of the precessing vortex core (PVC) and other
instabilities, which occur in, swirl combustion systems whilst identifying mechanisms, which …

Precessing vortex cores (PVC), arising from a global instability in swirling flows, can
dramatically alter the dynamics of swirl-stabilized flames. Previous study of these instabilities …