In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple
with acoustic pressure oscillations. If the heat release is sufficiently in phase with the …

Lean premix gas turbine combustors are prone to high amplitude pressure oscillations
driven by non-linear thermoacoustic coupling. These pulsations are unwanted because they …

Open-loop control of self-excited flame pulsating oscillations and thermo-acoustic instability
is considered in this work. The performance of the control strategy is numerically evaluated …

Thermoacoustic instability is the result of a positive coupling between the acoustic field in
the duct and the heat release rate fluctuations from the flame. Recently, in several turbulent …

We investigate the scale invariance of combustion noise generated from turbulent reacting
flows in a confined environment using complex networks. The time series data of unsteady …

Considerable research and development efforts are required to meet the targets of future
gas turbine technologies in terms of performance, emissions, and operational flexibility. One …

The stochastic nature of combustion instabilities in practical land-based gas turbines and
aeroengines combustors has seldom been investigated. It is shown here that a wealth of …

In this paper, we apply the novel EPTD (Exceptional Point-based Thermoacoustic Design)-
method derived in part I of this study (M. Casel & A. Ghani, Combust. Flame, 2024) to two lab …

Abstract The influence of Intrinsic Thermoacoustic (ITA) feedback on the combustion noise
spectrum produced by a confined, turbulent, premixed, swirl flame is investigated. The …

In this work, a Rijke tube with a hydrodynamic region confined is considered to investigate
its non-normality and the effect of the hydrodynamic region on the system stability behaviors …