It is accepted that the thermoacoustic behavior of a given combustion system can be
analyzed by investigating how its natural acoustic modes are perturbed by the flame …

The unsteady response of a flame to acoustic or flow perturbations plays a crucial role in
thermoacoustic combustion instability. The majority of studies on this subject presents and …

Accurate prediction of limit cycle oscillations resulting from combustion instability has been a
long-standing challenge. The present work uses a coupled approach to predict the limit …

This article describes recent progress on premixed flame dynamics interacting with acoustic
waves. Expressions are derived to determine the stability of combustors with respect to …

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 …

A study on the velocity sensitivity and intrinsic thermoacoustic stability of a laminar,
premixed, Bunsen-type flame is carried out. Direct numerical simulation (DNS) of the flame …

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 …

We propose a general classification of all the modes of a given thermoacoustic system into
two sets: one of acoustic origin and one of intrinsic thermoacoustic (ITA) origin. To do this …

Premixed flames are velocity sensitive, ie, they react to a velocity perturbation at the burner
mouth, say, with fluctuations in heat release rate. Unsteady heat release generates acoustic …

In this conceptual study, we introduce the novel EPTD (Exceptional Point-based
Thermoacoustic Design)-method for the design of stable thermoacoustic systems: dampen …