2020
DOI: 10.1016/j.combustflame.2019.11.006
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Intrinsic thermoacoustic modes in an annular combustion chamber

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Cited by 22 publications
(17 citation statements)
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References 31 publications
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“…The ITA loop is independent of the surrounding acoustic boundaries. It exists in both anechoic environments (Silva et al 2015;Hoeijmakers et al 2016) and reflective environments (Emmert et al 2017;Mukherjee & Shrira 2017;Silva et al 2017;Buschmann, Mensah & Moeck 2020a;Orchini et al 2020). We refer to the eigenvalues associated with this feedback mechanism as of ITA origin.…”
Section: Thermoacoustic Eigenvalues: Classification and Originmentioning
confidence: 99%
See 1 more Smart Citation
“…The ITA loop is independent of the surrounding acoustic boundaries. It exists in both anechoic environments (Silva et al 2015;Hoeijmakers et al 2016) and reflective environments (Emmert et al 2017;Mukherjee & Shrira 2017;Silva et al 2017;Buschmann, Mensah & Moeck 2020a;Orchini et al 2020). We refer to the eigenvalues associated with this feedback mechanism as of ITA origin.…”
Section: Thermoacoustic Eigenvalues: Classification and Originmentioning
confidence: 99%
“…2017; Mukherjee & Shrira 2017; Silva et al. 2017; Buschmann, Mensah & Moeck 2020 a ; Orchini et al. 2020).…”
Section: Introductionmentioning
confidence: 99%
“…2014; Emmert, Bomberg & Polifke 2015), with no requirement for acoustic reflection at the combustor boundaries (Silva et al. 2015; Buschmann, Mensah & Moeck 2020). Regardless of the specific feedback mechanism, however, thermoacoustic oscillations can exacerbate thermomechanical stresses and flame blowoff/flashback, limiting the performance and service life of the overall combustion system (Poinsot 2017).…”
Section: Introductionmentioning
confidence: 99%
“…If the HRR and pressure oscillations are sufficiently in phase, energy can be transferred from the flame to the acoustic field via the mechanism of Rayleigh (1945), resulting in self-excited flow oscillations whose frequencies are often close to those of the natural acoustic modes of the system (Culick 2006). Thermoacoustic instability can also arise from an intrinsic feedback mechanism involving upstream propagating acoustic waves emitted by the flame itself (Hoeijmakers et al 2014;Emmert, Bomberg & Polifke 2015), with no requirement for acoustic reflection at the combustor boundaries (Silva et al 2015;Buschmann, Mensah & Moeck 2020). Regardless of the specific feedback mechanism, however, thermoacoustic oscillations can exacerbate thermomechanical stresses and flame blowoff/flashback, limiting the performance and service life of the overall combustion system (Poinsot 2017).…”
Section: Introductionmentioning
confidence: 99%
“…Several studies focused on the effects of clearly identified combustor asymmetries, e.g. [24][25][26][27][28], and several reduced-order models [29][30][31][32][33][34][35][36][37][38] were proposed to explain experimental observations with limited success. Notably, a recently proposed ansatz for describing the acoustic field [39] was combined with the wave equation to describe an ideal annular combustor, unifying previous theoretical frameworks [40].…”
mentioning
confidence: 99%