On the dynamics of anchored flames
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2022, Combustion and FlameModeling and analysis of premixed flame dynamics by means of distributed time delays
2020, Progress in Energy and Combustion ScienceCitation Excerpt :This section will review analytical models for the time-delayed response of premixed flames to perturbations of the upstream flow velocity or to modulations of the equivalence ratio of the fuel/air premixture. Like earlier studies [11,12,25–28], which analyzed the flame response in the frequency domain and predicted the flame transfer function, the models are based on the so-called G-equation and are limited to the simplest possible case, i.e., laminar flames with a flame speed SL that does not depend on flame curvature. The effect of heat release on the fluid density is not taken into account explicitly.
Occurrence of multiple flame fronts in reheat combustors
2019, Combustion and FlameCitation Excerpt :Burning in lean conditions requires particular attention during the design phase to avoid a potential coupling between the acoustic field and the dynamic flame response, i.e. the possible onset of thermoacoustic instabilities. Most of the literature on thermoacoustics is dedicated to the thermoacoustics of premixed propagating flames [5–11]. Recently, reheat flames are gaining more and more interest due to their increasing relevance in gas turbine development.