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 …

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) …

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 …

Thermoacoustic instabilities are a long-standing problem. Both academia and industry
researched intensively this problem, but even today, no guidelines (or design rules) exist to …

Many physical systems are subject to uncertainty in operating regimes, boundary conditions,
and physical parameter values. The generalized polynomial chaos (gPC) framework offers …

In the preliminary phase of analyzing the thermoacoustic characteristics of a gas turbine
combustor, implementing robust design principles is essential to minimize detrimental …

The flame response to upstream velocity perturbations is properly described by a Finite
Impulse Response (FIR) model. When combining an FIR model with acoustic tools to predict …

Exceptional points can be found for specific sets of parameters in thermoacoustic systems.
At an exceptional point, two eigenvalues and their corresponding eigenfunctions coalesce …

Thermoacoustic stability analysis is an essential part of the engine development process.
Typically, thermoacoustic stability is determined by hybrid approaches. These approaches …

The thermo-acoustic stability of a combustor may be assessed in its design phase via
solving an expression for the interior acoustic field with flame characteristics treated as an …