Intrinsic thermoacoustic instabilities

CF Silva - Progress in Energy and Combustion Science, 2023 - Elsevier
It is accepted that the thermoacoustic behavior of a given combustion system can be
analyzed by investigating how its natural acoustic modes are perturbed by the flame …

Low-order modeling of collective dynamics of four ring-coupled turbulent thermoacoustic oscillators

Y Liao, Y Guan, P Liu, K Moon, KT Kim - Nonlinear Dynamics, 2024 - Springer
We investigate the low-order modeling of collective dynamics in a can-annular combustor
consisting of four ring-coupled turbulent lean-premixed combustors. Each combustor is …

Categorization of thermoacoustic modes in an ideal resonator with phasor diagrams

KJ Yong, CF Silva, GJJ Fournier, W Polifke - Combustion and Flame, 2023 - Elsevier
A recent study (Yong, Silva, and Polifke, Combust. Flame 228 (2021)) proposed the use of
phasor diagrams to categorize marginally stable modes in an ideal resonator with a …

Amplitude death in ring-coupled network with asymmetric thermoacoustic oscillators and nonlocal time-delay interactions

L Zheng, Y Liao, KT Kim, J Zhou, Y Guan - Nonlinear Dynamics, 2024 - Springer
This numerical study examines the pressure amplitude distribution, focusing on amplitude
death, in a ring-coupled network of nonlocally coupled asymmetric thermoacoustic …

[PDF][PDF] Thermoacoustic Dynamics of Gas Turbine Combustors: Effects of Hydrogen Blending and Tunable Acoustic Boundaries

A Blondé - 2023 - research-collection.ethz.ch
It is widely acknowledged worldwide that the increase in Earth's surface temperature has to
be contained in order to limit the effect of climate changes. This is particularly vital due to …

Adjoint-Based Analysis of Low-Order Thermoacoustic Networks

F Engelhardt - 2023 - mediatum.ub.tum.de
The thesis aims to improve the understanding of thermoacoustic system behavior by
employing and extending network model analysis. The proposed methods and …