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 …

This report deals with an experimental and analytical study of the occurrence of self-excited
hydrodynamic instabilities in swirling combustor flows. Different flow field types are …

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 …

Combustion instability, the coupling between flame heat release rate oscillations and
combustor acoustics, is a significant issue in the operation of gas turbine combustors. This …

Global instabilities in swirling flows can significantly alter the flame and flow dynamics of
swirl-stabilized flames, such as those in modern gas turbine engines. In this study, we …

Sudden changes of flame shape are an undesired, yet poorly understood feature of swirl
combustors used in gas turbines. The present work studies flame shape transition …

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 …

Combustion instability is a serious problem limiting the operating envelope of present day
gas turbine systems using a lean premixed combustion strategy. Gas turbine combustors …

Numerical simulation of a dual-swirl gas turbine model combustor is performed under cold
and reacting flow conditions using a three-dimensional unsteady Reynolds-averaged Navier …

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