In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple
with acoustic pressure oscillations. If the heat release is sufficiently in phase with the …

The study of the vibrational modes and stability of a given physical system is strongly tied to
the efficient numerical evaluation of its eigenvalues. The operators governing the …

In an acoustic cavity with a heat source, such as a flame in a gas turbine, the thermal energy
of the heat source can be converted into acoustic energy, which may generate a loud …

We present a two-step optimization (TSO) framework, which uses the pressure data of an
unstable combustion process to estimate the complex-valued flame transfer function (FTF) …

Gas turbines and rocket engines sometimes suffer from violent oscillations caused by
feedback between acoustic waves and flames in the combustion chamber. These are known …

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

Gas-turbine combustion chambers typically consist of nominally identical sectors arranged
in a rotationally symmetric pattern. However, in practice, the geometry is not perfectly …

In this study, the acoustics and flame dynamics of a prototype multi jet burner with 19
individual mixing tubes for operation with pure hydrogen and pure natural gas are …

In this study, the acoustics and flame dynamics of a prototype multijet burner with 19
individual mixing tubes for operation with pure hydrogen and pure natural gas are …

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 …