Self-sustained combustion instabilities are one of the most plaguing challenges and
problems in lean-conditioned propulsion and land-based engine systems, such as rocket …

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 …

Self-excited thermoacoustic instabilities as frequently observed in rocket motors, gas
turbines, ramjets, and aeroengine afterburners are highly detrimental and undesirable for …

With a sufficiently large impulse, a thermoacoustic system can reach self-sustained
oscillations even when it is linearly stable, a process known as triggering. In this paper, a …

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

Combustion instabilities in a Rijke tube could be triggered by the transient growth of flow
disturbances, which is associated with its non-normality. In this work, a Rijke tube with three …

Combustion instability frequently occurs in propulsion and power generation systems. It is
characterized by large-amplitude acoustic oscillations leading to undesirable …

Transient growth of acoustic disturbances could trigger thermoacoustic instability in a
combustion system with non-orthogonal eigenmodes, even with stable eigenvalues. In this …

Premixed low swirling flames (methane–air and hydrogen–methane–air) are experimentally
investigated for three different regimes. Stable, local transient to instability and limit cycle …

Unlike electric vehicles and electric aircrafts, hydrocarbon-fuelled (fossil) engine systems
are much noisier. By conducting one-step chemical reaction-thermodynamics-acoustics …