Thermoacoustically-Based Combustion Oscillation in a Gas Turbine—A Brief Note

FL Eisinger, RE Sullivan - J. Pressure …, 2003 - asmedigitalcollection.asme.org
Thermoacoustic combustion oscillation and vibration experienced in a gas turbine at
operation is reported. The oscillation manifested itself at two distinct frequencies …

Numerical modeling of thermoacoustic oscillations in a gas turbine combustion chamber

D Nowak, V Bellucci, J Cerny… - … Expo: Power for …, 2006 - asmedigitalcollection.asme.org
The prediction of high-frequency acoustic oscillations in gas turbine combustors is an
important issue, related to engine performance, NOx emissions, component lifetime and …

Competing contributions of structural, acoustic, and intrinsic modes to thermoacoustic oscillations

R Heydarlaki, W Aitchison, P Kostka… - Combustion Science …, 2022 - Taylor & Francis
Structural, acoustic, and intrinsic modes contributions to thermoacoustic oscillations of a
small-scale power generator combustor are investigated experimentally. Simultaneous OH∗ …

Non-stationary local thermoacoustic phase relationships in a gas turbine combustor

S Kheirkhah, BD Geraedts, P Saini… - Proceedings of the …, 2017 - Elsevier
A framework is presented for analyzing the local instantaneous phase difference between
non-stationary heat release rate and pressure oscillations that is appropriate for use in high …

Cross-frequency coupling during thermoacoustic oscillations in a pressurized aeronautical gas turbine model combustor

ML Passarelli, TM Wabel, A Cross… - Proceedings of the …, 2021 - Elsevier
This paper demonstrates cross-frequency coupling between pressure, heat release rate, fuel
spray and velocity oscillations in a model aeronautical gas turbine combustor operating at a …

Investigation of self-induced thermoacoustic instabilities in gas turbine combustors

SS Rashwan, A Mohany, I Dincer - Energy, 2020 - Elsevier
The self-induced thermoacoustic instabilities in partially premixed combustors remain a
significant challenge which has received a limited research attention. This numerical work …

Analysis of intermittent thermoacoustic oscillations in an aeronautical gas turbine combustor

JDM Cirtwill, S Kheirkhah, P Saini… - 55th AIAA Aerospace …, 2017 - arc.aiaa.org
This paper analyzes thermoacoustic driving-and the underlying fuel and air dynamicsduring
self-excited intermittent oscillations (changing amplitude and frequency) of a dualannular …

[HTML][HTML] Study on the acoustic characteristics of a heavy-duty gas turbine combustor

X Li, J Xiao, S Gao, F Wang, W Wang, J Xia - Journal of Engineering …, 2023 - Elsevier
The acoustic characteristics of combustor are an important theoretical basis for determining
whether a gas turbine will undergo thermoacoustic coupled oscillatory combustion. In this …

The Effect of Acoustic Boundary Conditions on the Oscillation Mode Transition of Combustion System

Y Lu, M Jin, B Ge, S Zang - … Expo: Power for …, 2024 - asmedigitalcollection.asme.org
The lean premixed combustion technology makes thermoacoustic oscillation possible to
occur in gas turbine combustor. With the change of operating condition, the amplitude and …

Thermoacoustic oscillations in an annular combustor

SR Stow, AP Dowling - Turbo Expo: Power for Land …, 2001 - asmedigitalcollection.asme.org
Lean premixed prevaporised (LPP) combustion can reduce NO x emissions from gas
turbines, but often leads to combustion instability. Acoustic waves produce fluctuations in …