Dynamics and control of premixed combustion systems based on flame transfer and describing functions

T Schuller, T Poinsot, S Candel - Journal of Fluid Mechanics, 2020 - cambridge.org
This article describes recent progress on premixed flame dynamics interacting with acoustic
waves. Expressions are derived to determine the stability of combustors with respect to …

Numerical study on intrinsic thermoacoustic instability of a laminar premixed flame

CF Silva, T Emmert, S Jaensch, W Polifke - Combustion and Flame, 2015 - Elsevier
A study on the velocity sensitivity and intrinsic thermoacoustic stability of a laminar,
premixed, Bunsen-type flame is carried out. Direct numerical simulation (DNS) of the flame …

Thermoacoustic modes of intrinsic and acoustic origin and their interplay with exceptional points

A Orchini, CF Silva, GA Mensah, JP Moeck - Combustion and Flame, 2020 - Elsevier
We propose a general classification of all the modes of a given thermoacoustic system into
two sets: one of acoustic origin and one of intrinsic thermoacoustic (ITA) origin. To do this …

Flame dominated thermoacoustic instabilities in a system with high acoustic losses

M Hoeijmakers, V Kornilov, IL Arteaga, P de Goey… - Combustion and …, 2016 - Elsevier
The thermoacoustic stability behaviour of a flame is experimentally investigated in the
presence of large acoustic losses. Recently it has become clear that under such conditions …

Uncertainty quantification and sensitivity analysis of thermoacoustic stability with non-intrusive polynomial chaos expansion

A Avdonin, S Jaensch, CF Silva, M Češnovar… - Combustion and …, 2018 - Elsevier
In this paper, non-intrusive polynomial chaos expansion (NIPCE) is used for forward
uncertainty quantification and sensitivity analysis of thermoacoustic stability of two premixed …

Thermoacoustic interplay between intrinsic thermoacoustic and acoustic modes: non-normality and high sensitivities

FM Sogaro, PJ Schmid, AS Morgans - Journal of Fluid Mechanics, 2019 - cambridge.org
This study analyses the interplay between classical acoustic modes and intrinsic
thermoacoustic (ITA) modes in a simple thermoacoustic system. The analysis is performed …

Intrinsic flame instabilities in combustors: analytic description of a 1-D resonator model

NK Mukherjee, V Shrira - Combustion and Flame, 2017 - Elsevier
The study is concerned with theoretical examination of thermo-acoustic instabilities in
combustors and focuses on recently discovered 'flame intrinsic modes'. These modes differ …

Intrinsic thermoacoustic modes in an annular combustion chamber

PE Buschmann, GA Mensah, JP Moeck - Combustion and Flame, 2020 - Elsevier
Thermoacoustic instabilities originate from the interaction of unsteady heat release rate
associated with flames and the acoustic modes of a combustor. A feedback loop not …

Combined applications of analytic methods for detection of combustion instability triggering

HT Luong, Y Wang, HS Han, CH Sohn - Aerospace Science and …, 2021 - Elsevier
Analytic methods are applied to investigate the dynamic behaviors of the model chambers
with different lengths. They are dynamic mode decomposition (DMD), short-time Fourier …

Competing contributions of structural, acoustic, and intrinsic modes to thermoacoustic oscillations

R Heydarlaki, W Aitchison, P Kostka… - Combustion Science …, 2022 - Taylor & Francis
Structural, acoustic, and intrinsic modes contributions to thermoacoustic oscillations of a
small-scale power generator combustor are investigated experimentally. Simultaneous OH∗ …