[HTML][HTML] Failure of thermoacoustic instability control due to periodic hot gas ingestion in Helmholtz dampers

L Miniero, GA Mensah, C Bourquard… - Journal of Sound and …, 2023 - Elsevier
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 …

Experimental investigation of combustion instability in a centrally staged combustor under self-excited oscillation conditions

J Ma, M Han, X Han, X Hui, X Xue - Physics of Fluids, 2023 - pubs.aip.org
This paper presents an experimental investigation of combustion instability and flame
dynamics in a laboratory-scale lean premixed prevaporized centrally staged combustor …

Forced synchronization of self-excited chaotic thermoacoustic oscillations

Y Guan, B Yin, Z Yang, LKB Li - Journal of Fluid Mechanics, 2024 - cambridge.org
We experimentally investigate the forced synchronization of a self-excited chaotic
thermoacoustic oscillator with two natural frequencies, plane. This study extends the …

Experimental and theoretical investigation on the thermoacoustic-induced vibration in a centrally-staged combustor

Z Qin, Y Lin, M Han, X Han, X Zhang, P He, X Gao… - Combustion and …, 2025 - Elsevier
Thermoacoustic-induced vibration is a practical issue for the safe combustion operation. In
this study, we conducted experiments in a centrally-staged combustor for the realistic swirl …

Data-driven model-based instability prediction in an annular combustor relying on a flame response mapping of the operating domain

V Latour, D Durox, A Renaud, S Candel - Combustion and Flame, 2024 - Elsevier
At a stage where new architectures and alternative fuels are being proposed to tackle the
environmental challenges, it is important to be able to deal with combustion dynamics issues …

[HTML][HTML] Tunable passive control of thermoacoustic instabilities based on a variable geometry combustor outlet nozzle

A Blondé, B Schuermans, B Dharmaputra… - Aerospace Science and …, 2025 - Elsevier
This paper presents a tunable combustor outlet geometry, which enables control of
thermoacoustic instabilities. It is based on a water-cooled conical piston inserted in the outlet …

[HTML][HTML] Experimental and theoretical estimation of acoustic energy source terms and instability growth rates in an annular combustor

V Latour, D Durox, A Renaud, S Candel - Proceedings of the Combustion …, 2024 - Elsevier
The determination of acoustic source terms and growth rates is of paramount importance in
the thermoacoustic stability analysis of combustion systems. This article aims to …

[HTML][HTML] Stabilization of a thermoacoustically unstable sequential combustor using non-equilibrium plasma: Large eddy simulation and experiments

Q Malé, S Shcherbanev, M Impagnatiello… - Proceedings of the …, 2024 - Elsevier
Plasma-assisted combustion using Nanosecond Repetitively Pulsed Discharges (NRPDs) is
an emerging technology that enhances the reactivity of fuel–air mixtures, offering significant …

Identifying optimal location for control of thermoacoustic instability through statistical analysis of saddle point trajectories

CP Premchand, A Krishnan, M Raghunathan… - … Journal of Nonlinear …, 2024 - pubs.aip.org
We propose a framework of Lagrangian Coherent Structures (LCSs) to enable passive open-
loop control of tonal sound generated during thermoacoustic instability. Experiments were …

Experimental Investigation of Acoustic Characteristics of Boundary Condition for a Combustor

M Ikwubuo, JG Lee - … : Power for Land, Sea, and Air, 2023 - asmedigitalcollection.asme.org
In the reported paper, the reflection coefficient at the exit of the bluff-body combustor is
experimentally measured over a range of operating conditions for different exit orifice plates …