This paper describes an analysis of the response of swirling premixed flames to helical
disturbances, ie, where the flow fluctuations have an azimuthal dependence of the form u …

A key component of the thermoacoustic instability feedback mechanism is the excitation of
hydrodynamic flow disturbances by narrowband acoustic fluctuations. In earlier work, we …

Flow oscillations associated with hydrodynamic instabilities comprise a key element of the
feedback loop during self-excited combustion driven oscillations. This work is motivated in …

Periodic behavior in the reaction zone of a multiple nozzle combustor undergoing self-
sustaining combustion oscillations is examined. This combustor has three stages: a high …

In this study, reconstruction of flame chemiluminescence distribution with complicated
structure was numerically investigated and experimentally validated. The ill-conditioned …

This paper considers the response of premixed flames to helical disturbances. It is part of a
larger series of studies that is looking at the manner in which acoustically excited flow …

The engine flame is an important representation of the combustion process in the cylinder,
and the three-dimensional (3-D) shape reconstruction of the flame can provide more …

During combustion instabilities, the flame is subjected to both acoustic and vortical flow
disturbances. The vortical disturbances primarily stem from hydrodynamic instabilities in the …

Flow oscillations associated with hydrodynamic instabilities comprise a key element of the
feedback loop during self-excited combustion driven oscillations. This work is motivated in …

The response of flames to velocity perturbations is studied experimentally in a multi-nozzle
lean-premixed (LPM) gas turbine combustor experiment, representative of a realistic gas …