The unsteady response of a flame to acoustic or flow perturbations plays a crucial role in
thermoacoustic combustion instability. The majority of studies on this subject presents and …

Progress in analytical methods to predict and control azimuthal combustion instability
modes in annular chambers | Physics of Fluids | AIP Publishing Skip to Main Content …

Thermoacoustic instabilities are often calculated with Helmholtz solvers combined with a low-
order model for the flame dynamics. Typically, such a formulation leads to an eigenvalue …

Abstract Monte Carlo and Active Subspace Identification methods are combined with first-
and second-order adjoint sensitivities to perform (forward) uncertainty quantification analysis …

In this paper, non-intrusive polynomial chaos expansion (NIPCE) is used for forward
uncertainty quantification and sensitivity analysis of thermoacoustic stability of two premixed …

Thermoacoustic instabilities pose a major threat to modern gas turbines. The use of acoustic
dampers, like Helmholtz resonators, has proven useful for the mitigation of such instabilities …

Thermoacoustic instabilities are a major threat for modern gas turbines. Frequency-domain-
based stability methods, such as network models and Helmholtz solvers, are common …

Nonintrusive polynomial chaos expansion (NIPCE) is used to quantify the impact of
uncertainties in operating conditions on the flame transfer function (FTF) of a premixed …

The thermoacoustic behavior of a combustion system can be determined numerically via
acoustic tools such as Helmholtz solvers or network models coupled with a model for the …

Thermoacoustic instabilities have the potential to restrict the operability window of annular
combustion systems, primarily as a result of azimuthal modes. Azimuthal acoustic modes are …