Flame transfer function saturation mechanisms in a swirl-stabilized combustor

By Benjamin D. Bellows, M. Bobba, A. Forte, J. Seitzman, T. Lieuwen. 2007

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Combining a Helmholtz solver with the flame describing function to assess combustion instability in a premixed swirled combustor (2013, background): “For a given frequency and for increasing values of the acoustic velocity amplitude, the gain and phase of the FDF evolve (Balachandran et al., 2005; Bellows et al., 2007; Durox et al., 2009; Schimek et al., 2011; Kim and Hochgreb, 2011).”
A unified framework for nonlinear combustion instability analysis based on the flame describing function (2008, methodology): “This is exemplified by experimental observations of saturation of heat release oscillations (e.g. Lieuwen & Neumeier 2002; Lee & Santavicca 2003; Balachandran et al. 2005; Bellows et al. 2007; Birbaud et al. 2007).”
Modal dynamics of self-excited azimuthal instabilities in an annular combustion chamber (2013, background): “For quite some time theoretical and experimental research has focused on laminar and turbulent axisymmetric flames subjected to longitudinal oscillations [4–15].”
Sensitivity and Nonlinearity of Thermoacoustic Oscillations (2018, background): “, 2015), and turbulent premixed or partially-premixed swirling flames (Bellows et al., 2007; Shreekrishna et al., 2010; Palies et al., 2011; Schimek et al., 2011; Krediet et al., 2012; Ćosić et al., 2014).”