Thermoacoustic instability is a flow instability that arises due to a two-way coupling between
acoustic waves and unsteady heat release rate. It can cause damaging, large-amplitude …

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 …

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 …

Practical passive control solutions for azimuthal thermoacoustic instabilities in annular
combustors, which typically involve symmetry-breaking strategies, have garnered increasing …

This article deals with the symmetry breaking of azimuthal thermoacoustic modes in annular
combustors. Using a nominally symmetric annular combustor, we present experimental …

In jet engines and gas turbines, the annular shape of the combustion chamber allows the
appearance of self-oscillating azimuthal thermoacoustic modes. We report experimental …

Acoustic metamaterial attains uncommon material properties over natural material such as
negative effective mass density or negative effective bulk modulus or both. The effective bulk …

Passive damping devices such as Helmholtz dampers are often employed in gas turbines to
mitigate thermoacoustic instabilities. The periodic ingestion of the combustion chamber hot …

This study analyses the interplay between classical acoustic modes and intrinsic
thermoacoustic (ITA) modes in a simple thermoacoustic system. The analysis is performed …

This work introduces a novel method to represent the topological complexity of liners and
boundaries in Low Order Models for thermoacoustic instabilities, under the assumption of …