Prediction and control of combustion instabilities in real engines

T Poinsot - Proceedings of the Combustion Institute, 2017 - Elsevier
This paper presents recent progress in the field of thermoacoustic combustion instabilities in
propulsion engines such as rockets or gas turbines. Combustion instabilities have been …

Autoignition flame dynamics in sequential combustors

O Schulz, N Noiray - Combustion and Flame, 2018 - Elsevier
This numerical study investigates the linear and non-linear flame dynamics in the second
stage of a sequential combustor, with methane fuel injection into vitiated hot gas. It focuses …

Contributions of hydrodynamic features of a swirling flow to thermoacoustic instabilities in a lean premixed swirl stabilized combustor

B Zhang, M Shahsavari, Z Rao, S Yang, B Wang - Physics of Fluids, 2019 - pubs.aip.org
A comprehensive study on influences of hydrodynamic features of a swirling flow on
thermoacoustic instabilities in a swirl stabilized combustor is performed by using large eddy …

Incompressible versus compressible large eddy simulation for the identification of premixed flame dynamics

AJ Eder, CF Silva, M Haeringer… - … Journal of Spray …, 2023 - journals.sagepub.com
The present work compares the respective advantages and disadvantages of compressible
and incompressible computational fluid dynamics (CFD) formulations when used for the …

Thermo-acoustic Instabilities in the PRECCINSTA Combustor Investigated Using a Compressible LES-pdf Approach

D Fredrich, WP Jones, AJ Marquis - Flow, Turbulence and Combustion, 2021 - Springer
This work predicts the evolution of self-excited thermo-acoustic instabilities in a gas turbine
model combustor using large eddy simulation. The applied flow solver is fully compressible …

Influence of a central jet on isothermal and reacting swirling flow in a model combustion chamber

EV Palkin, MY Hrebtov, DA Slastnaya… - Energies, 2022 - mdpi.com
We studied flow dynamics in a model combustion chamber using Large-eddy simulations
(LES) and Particle image velocimetry (PIV) at the Reynolds number R e of 15,000. The swirl …

Linearized Euler equations for the prediction of linear high-frequency stability in gas turbine combustors

M Schulze, T Hummel… - … for Gas Turbines …, 2017 - asmedigitalcollection.asme.org
A novel methodology for linear stability analysis of high-frequency thermoacoustic
oscillations in gas turbine combustors is presented. The methodology is based on the …

Coupled interactions of a helical precessing vortex core and the central recirculation bubble in a swirl flame at elevated power density

R Zhang, I Boxx, W Meier, CD Slabaugh - Combustion and Flame, 2019 - Elsevier
The PRECCINSTA GTMC was studied at elevated pressure and power density with 6 kHz
stereoscopic particle image velocimetry (SPIV), OH* chemiluminescence (CL), and 100 kHz …

Intrinsic thermoacoustic feedback loop in turbulent spray flames

A Ghani, T Steinbacher, A Albayrak, W Polifke - Combustion and Flame, 2019 - Elsevier
This paper investigates low-frequency thermoacoustic instabilities of a turbulent spray flame,
a phenomenon known as 'rumble'. Based on experimental data, a network model analysis is …

Effects of the fresh mixture temperature on thermoacoustic instabilities in a lean premixed swirl-stabilized combustor

B Zhang, M Shahsavari, Z Rao, R Li, S Yang… - Physics of …, 2020 - pubs.aip.org
This numerical study investigated the effects of the fresh mixture temperature on
thermoacoustic instabilities in a lean premixed swirl-stabilized combustion chamber by …