State-of-the-art computer codes for simulating real physical systems are often characterized
by vast number of input parameters. Performing uncertainty quantification (UQ) tasks with …

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 …

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

In this work, a rich-dome aviation combustor operating over a range of high-power
conditions is investigated using multiple Large Eddy Simulations (LES). The LES flow …

Modern gas turbines are a key technology for reliable and sustainable power generation. In
order to meet strict emission regularizations they utilize lean premixed combustion. This …

This paper outlines two new applications of adjoint methods in the study of thermoacoustic
instability. The first is to calculate gradients for the active subspace method, which is used in …

This article examines the degree to which optimizing a Rijke tube experiment can improve
the accuracy of thermoacoustic model parameter estimation, thereby facilitating robust …