Progress in analytical methods to predict and control azimuthal combustion instability modes in annular chambers - Archive ouverte HAL Access content directly
Journal Articles Physics of Fluids Year : 2016

Progress in analytical methods to predict and control azimuthal combustion instability modes in annular chambers

Abstract

Longitudinal low-frequency thermoacoustic unstable modes in combustion chambers have been intensively studied experimentally, numerically, and theoretically, leading to significant progress in both understanding and controlling these acoustic modes. However, modern annular gas turbines may also exhibit azimuthal modes, which are much less studied and feature specific mode structures and dynamic behaviors, leading to more complex situations. Moreover, dealing with 10–20 burners mounted in the same chamber limits the use of high fidelity simulations or annular experiments to investigate these modes because of their complexity and costs. Consequently, for such circumferential acoustic modes, theoretical tools have been developed to uncover underlying phenomena controlling their stability, nature, and dynamics. This review presents recent progress in this field. First, Galerkin and network models are described with their pros and cons in both the temporal and frequency framework. Then, key features of such acoustic modes are unveiled, focusing on their specificities such as symmetry breaking, non-linear modal coupling, forcing by turbulence. Finally, recent works on uncertainty quantifications, guided by theoretical studies and applied to annular combustors, are presented. The objective is to provide a global view of theoretical research on azimuthal modes to highlight their complexities and potential.
Fichier principal
Vignette du fichier
Bauerheim_15121.pdf (1.26 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01269821 , version 1 (05-02-2016)

Identifiers

Cite

Michaël Bauerheim, Franck Nicoud, Thierry Poinsot. Progress in analytical methods to predict and control azimuthal combustion instability modes in annular chambers. Physics of Fluids, 2016, 28 (2), pp.021303. ⟨10.1063/1.4940039⟩. ⟨hal-01269821⟩
88 View
429 Download

Altmetric

Share

Gmail Facebook X LinkedIn More