A three-dimensional finite element code is used for the eigenvalue analysis of the
thermoacoustic combustion instabilities modeled through the Helmholtz equation. A full …

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

The aim of this paper is to investigate how nonlinear flame models influence the bifurcation
process that characterize the transition to self-sustained thermo-acoustic pressure …

Lean premixed combustion chambers fuelled by natural gas and used in modern gas
turbines for power generation are often affected by combustion instabilities generated by …

Since its introduction in the late 19th century, symmetry breaking has been found to play a
crucial role in physics. In particular, it appears as one key phenomenon controlling …

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 …

Modern gas turbines equipped with lean premixed dry low emission combustion systems
suffer the problem of thermoacoustic combustion instability. The acoustic characteristics of …

This thesis numerically predicts thermoacoustic instability in two typical gas turbine
combustors. Incompressible large eddy simulation (LES) is used as the main numerical tool …

为分析贫油预混预蒸发(LPP) 燃烧室的燃烧不稳定(CI) 特征, 通过对三维亥姆霍兹方程进行了三
种不同程度的简化: 平均温度场和导入CFD 温度场的无源项方程, 以及导入燃烧流场特征的有源 …

The feasibility of prediction of thermoacoustic instability using a wave-based reduced order
network model is evaluated for a micromixer combustor where the flame length is about 43 …