Swirler effects on combustion instabilities analyzed with measured FDFs, injector impedances and damping rates
The influence of the injection system on combustion instabilities is investigated on a
laboratory-scale combustor equipped with a single injector that is weakly-transparent to …
laboratory-scale combustor equipped with a single injector that is weakly-transparent to …
High-frequency hydrogen combustion dynamics driven by local flame displacement and multidimensional thermoacoustic interactions
Abstract Knowledge of the underlying physical mechanisms responsible for the triggering of
high-frequency transverse combustion dynamics is of fundamental importance in the …
high-frequency transverse combustion dynamics is of fundamental importance in the …
Thermoacoustic analysis of a laminar premixed flame using a linearized reactive flow solver
A Avdonin, M Meindl, W Polifke - Proceedings of the Combustion Institute, 2019 - Elsevier
In this paper, the dynamics and thermoacoustic stability of a laminar premixed flame are
analyzed using a linearized reactive flow (LRF) solver. The LRF solver is based on …
analyzed using a linearized reactive flow (LRF) solver. The LRF solver is based on …
Experimental investigation of high-frequency transverse instability in Helmholtz resonator-coupled lean-premixed hydrogen combustor
Recent experimental studies suggest that lean-premixed pure hydrogen combustion plays a
central role in generating self-sustained pressure oscillations, preferentially coupled with …
central role in generating self-sustained pressure oscillations, preferentially coupled with …
Effect of flame motion on longitudinal combustion instabilities
Y Song, J Li, L Yang - Aerospace Science and Technology, 2022 - Elsevier
In the analysis of combustion instabilities, especially for the longitudinal modes, the flame
typically is regarded as a discontinuity at rest and the flame motion is usually ignored …
typically is regarded as a discontinuity at rest and the flame motion is usually ignored …
[HTML][HTML] An Arbitrary Lagrangian–Eulerian framework for the consistent analysis of entropy wave generation
Entropy waves are generated in many technically relevant flow processes such as
combustion, mixing, or convective heat transfer. When accelerated, entropy waves generate …
combustion, mixing, or convective heat transfer. When accelerated, entropy waves generate …
On the invariance of flame-motion-induced variations of the generalized disturbance energy
JM Klein, A Gandilhon-Gounelle… - Combustion and …, 2023 - Elsevier
The response of a one-dimensional laminar premixed flame to an inlet velocity forcing is
investigated within the disturbance energy budget (DEB) framework. It is evidenced that the …
investigated within the disturbance energy budget (DEB) framework. It is evidenced that the …
Analysis of high-frequency dynamics of a reacting jet in crossflow based on large eddy simulation
P Bonnaire, W Polifke - Journal of Engineering for …, 2024 - asmedigitalcollection.asme.org
Distributed combustion systems have shown the potential to reduce emissions as well as
increase load and fuel flexibility. A characteristic feature of such systems is a reacting jet in …
increase load and fuel flexibility. A characteristic feature of such systems is a reacting jet in …
High-frequency thermo-acoustic instability in a dual swirl H2 burner
High-frequency self-sustained combustion oscillations coupled to a transverse acoustic
mode around 5 kHz are investigated in a partially premixed dual-swirled hydrogen burner …
mode around 5 kHz are investigated in a partially premixed dual-swirled hydrogen burner …
Design and testing of a high frequency thermoacoustic combustion experiment
V Sharifi, C Beck, B Janus, AM Kempf - AIAA Journal, 2021 - arc.aiaa.org
This paper presents a novel experiment in an atmospheric cylindrical single-jet combustor,
designed to exhibit high-frequency radial thermoacoustic instabilities. The experimental …
designed to exhibit high-frequency radial thermoacoustic instabilities. The experimental …