The combined dynamics of swirler and turbulent premixed swirling flames

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Thermoacoustic Instability Considerations for High Hydrogen Combustion in Lean Premixed Gas Turbine Combustors: A Review (2021, background): “Coupled interaction between two or more mechanisms can also occur [54,57].”
Combining a Helmholtz solver with the flame describing function to assess combustion instability in a premixed swirled combustor (2013, methodology): “It was shown by Palies et al. (2010, 2011c) that these minimum and maximum are associated to interfering acoustic and vorticity waves featuring a different propagation velocity between the plenum and the flame (perturbations in flow rate propagate at the speed of sound but also generate…”
Modal dynamics of self-excited azimuthal instabilities in an annular combustion chamber (2013, background): “In the absence of swirl, no combination of Lo and Li resulted in self-excited circumferential instabilities suggesting that the mean flame shape and swirl-associated instabilities are important [17,24,26].”
Large Eddy Simulations of gaseous flames in gas turbine combustion chambers (2012, background): “Recent publications [219,221,302] highlight the influence of swirl.”