Intrinsic thermoacoustic instabilities
CF Silva - Progress in Energy and Combustion Science, 2023 - Elsevier
It is accepted that the thermoacoustic behavior of a given combustion system can be
analyzed by investigating how its natural acoustic modes are perturbed by the flame …
analyzed by investigating how its natural acoustic modes are perturbed by the flame …
Modeling and analysis of premixed flame dynamics by means of distributed time delays
W Polifke - Progress in Energy and Combustion Science, 2020 - Elsevier
The unsteady response of a flame to acoustic or flow perturbations plays a crucial role in
thermoacoustic combustion instability. The majority of studies on this subject presents and …
thermoacoustic combustion instability. The majority of studies on this subject presents and …
Impact of swirl fluctuations on the flame response of a perfectly premixed swirl burner
T Komarek, W Polifke - 2010 - asmedigitalcollection.asme.org
Combustion instabilities represent a long known problem in combustion technology. The
complex interactions between acoustics and turbulent swirling flames are not fully …
complex interactions between acoustics and turbulent swirling flames are not fully …
Scaling and prediction of transfer functions in lean premixed H2/CH4-flames
Features of the flame transfer function (FTF) are characterized for turbulent, non-swirled,
bluff body stabilized “M” flames for different hydrogen and methane blends including pure …
bluff body stabilized “M” flames for different hydrogen and methane blends including pure …
[HTML][HTML] Impact of H2-enrichment on the response of a partially premixed CH4–air flame to velocity and equivalence ratio fluctuations
The dynamics of hydrogen-enriched partially premixed methane–air flames are investigated,
focusing on the frequency response to velocity and equivalence ratio fluctuations. Large …
focusing on the frequency response to velocity and equivalence ratio fluctuations. Large …
On the low-frequency limit of flame transfer functions
W Polifke, C Lawn - Combustion and flame, 2007 - Elsevier
The response of a premixed flame to quasi-steady flow perturbations is considered. It is
found that in this low-frequency limit, constraints on the flame transfer function can be …
found that in this low-frequency limit, constraints on the flame transfer function can be …
Thermoacoustic modeling of a gas turbine using transfer functions measured under full engine pressure
B Schuermans, F Guethe, D Pennell, D Guyot… - 2010 - asmedigitalcollection.asme.org
Thermoacoustic transfer functions of a full-scale gas turbine burner operating under full
engine pressure have been measured. The excitation of the high-pressure test facility was …
engine pressure have been measured. The excitation of the high-pressure test facility was …
Numerical study on intrinsic thermoacoustic instability of a laminar premixed flame
A study on the velocity sensitivity and intrinsic thermoacoustic stability of a laminar,
premixed, Bunsen-type flame is carried out. Direct numerical simulation (DNS) of the flame …
premixed, Bunsen-type flame is carried out. Direct numerical simulation (DNS) of the flame …
Comparison of the flow field of a swirl stabilized premixed burner in an annular and a single burner combustion chamber
D Fanaca, PR Alemela, C Hirsch, T Sattelmayer - 2010 - asmedigitalcollection.asme.org
An experimental investigation of the flow field of a 12 burner annular combustor and a single
burner combustor with the same burner was performed. It has revealed the aerodynamic …
burner combustor with the same burner was performed. It has revealed the aerodynamic …
Propagation and generation of acoustic and entropy waves across a moving flame front
In analytical models of the propagation and generation of acoustic and entropy waves
across a premixed flame, the relations that couple upstream and downstream flow variables …
across a premixed flame, the relations that couple upstream and downstream flow variables …