The prevalence of gas turbines operating in primarily lean premixed modes is predicated on
the need for lower emissions and increased efficiency. An enhancement in the mixing …

An investigation into the response of non-premixed swirling flames to acoustic perturbations
at various frequencies (fp= 0–315Hz) and swirl intensities (S= 0.09 and 0.34) is carried out …

With the advent of lean premixed gas turbine combustors, research in the area of thermo-
acoustic instabilities and active combustion control came into the limelight. To be able to …

Lean premixed combustors are highly susceptible to combustion instabilities, caused by the
coupling between heat release fluctuations and combustor acoustics. In order to predict the …

This paper reports an experimental investigation of dynamic response of nonpremixed
atmospheric swirling flames subjected to external, longitudinal acoustic excitation. Acoustic …

Combustion instability is a process which involves unsteady chemical kinetic, fluid
mechanic, and acoustic processes. It can lead to unstable behavior and be detrimental in …

Combustion instabilities represent a long known problem in combustion technology. The
complex interactions between acoustics and turbulent swirling flames are not fully …

The goal of this study was to select and test some analysis tools to identify and characterize
precursors to the onset of thermo-acoustic pulsation in a gas turbine combustor. The target …

Premixed flames respond to velocity perturbations with fluctuations in heat release rate
(“thermal response”), which in turn generate acoustic perturbations (“acoustic response”) …

Flame dynamics in the presence of transverse acoustic fluctuations is an aspect of relevance
to modern annular combustors. In particular, it is a key element underlying the occurrence …