Nine decades of rocket engine and gas turbine development have shown that
thermoacoustic oscillations are difficult to predict but can usually be eliminated with …

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 …

Thermoacoustic instability in turbulent combustors is a nonlinear phenomenon resulting
from the interaction between acoustics, hydrodynamics, and the unsteady flame. Over the …

The transition in dynamics from low-amplitude, aperiodic, combustion noise to high-
amplitude, periodic, combustion instability in confined, combustion environments was …

Thermoacoustic instability, also known as combustion instability, continues to be a problem
in the development of modern gas turbine combustors and rocket engines. Such instability is …

This paper deals with the dynamics of standing and rotating azimuthal thermoacoustic
modes in annular combustion chambers. Simultaneous acoustic measurements have been …

Reacting flow fields are often subject to unsteadiness due to flow, reaction, diffusion, and
acoustics. Further, flames can also exhibit inherent unsteadiness caused by various intrinsic …

This paper investigates the simplifying assumptions used for deriving low order models of
thermoacoustic instabilities and thermoacoustic intermittency in turbulent combustor. These …

The Hall-effect thruster is a prominent space propulsion system, providing a high specific
impulse and thrust-to-power ratio. However, detrimental phenomena occurring in Hall …

This article reports a numerical analysis of combustion instabilities coupled by a spinning
mode or a standing mode in an annular combustor. The method combines an iterative …