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 …

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

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 …

The present work compares the respective advantages and disadvantages of compressible
and incompressible computational fluid dynamics (CFD) formulations when used for the …

Carbon-free ammonia is a promising hydrogen energy carrier. Using ammonia as gas
turbine fuel can effectively reduce carbon emissions. This study examines thermoacoustic …

A sequential combustor architecture consists of two longitudinally staged combustion zones
featuring a propagation-stabilized flame in the first stage and an autoignition-stabilized …

We investigate the thermoacoustic response of a simple laboratory combustor where the
flame response is varied systematically by combining hydrogen enrichment with coherent …

In this work, we present a parsimonious set of ordinary differential equations (ODEs),
describing with good precision and over a wide range of frequencies the linear and …

Replacing methane by hydrogen in premixed burners is a typical decarbonation scenario.
This is usually done by ensuring a constant flame speed, ie by using ultra-lean H 2 mixtures …

The Galerkin modal expansion is a well-known method used to develop reduced order
models for thermoacoustics. A known issue is the appearance of Gibbs-type oscillations on …