2013
DOI: 10.1098/rspa.2012.0535
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Abstract: This paper deals with the dynamics of standing and rotating azimuthal thermoacoustic modes in annular combustion chambers. Simultaneous acoustic measurements have been made at multiple circumferential positions in an annular gas turbine combustion chamber. A detailed statistical analysis of the spatial Fourier amplitudes extracted from these data reveals that the acoustic modes are continuously switching between standing, clockwise and counter-clockwise travelling waves. A theoretical framework from which the … Show more

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Cited by 128 publications
(112 citation statements)
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“…This study improves the current understanding of standing and spinning modes in symmetric annular combustion chambers, which is the subject of current research [5,6,10,12,15]. The starting point of this study is the model proposed in Noiray et al [7]: the fluctuating heat release q is assumed to grow linearly and saturate nonlinearly as the pressure increases, as q = f (p) = β − κp 3 .…”
Section: Discussionmentioning
confidence: 99%
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“…This study improves the current understanding of standing and spinning modes in symmetric annular combustion chambers, which is the subject of current research [5,6,10,12,15]. The starting point of this study is the model proposed in Noiray et al [7]: the fluctuating heat release q is assumed to grow linearly and saturate nonlinearly as the pressure increases, as q = f (p) = β − κp 3 .…”
Section: Discussionmentioning
confidence: 99%
“…The starting point of this study is the model proposed in Noiray et al [7]: the fluctuating heat release q is assumed to grow linearly and saturate nonlinearly as the pressure increases, as q = f (p) = β − κp 3 . In our analysis, we add an extra dependence, which reflects experimental observations [ the fluctuating heat release fluctuates axisymmetrically at velocity nodes (pressure antinodes), whereas it fluctuates from side to side at velocity antinodes (pressure nodes), as in figure 1.…”
Section: Discussionmentioning
confidence: 99%
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“…Nicoud & Poinsot [34] show an analytical method and the numerical approach to predict the thermoacoustic modes of industrial combustors. Several authors as Blimbaum et al [35], Noiray & Schuermans [36] and Bauerheim & Poinsot [37] focused in their research on the study of thermoacoustic modes in annular combustion chambers through experimental, numerical or analytical methods. In comparison to the previous papers, this part of the dissertation focuses on an accurate numerical analysis of the interaction between combustor and turbine, emphasizing also the acoustic relationship between two neighboring cans.…”
Section: Combustor-turbine Acoustic Interaction -Literature Overviewmentioning
confidence: 99%