Scaling and prediction of transfer functions in lean premixed H2/CH4-flames

E Æsøy, JG Aguilar, S Wiseman, MR Bothien… - Combustion and …, 2020 - Elsevier
Features of the flame transfer function (FTF) are characterized for turbulent, non-swirled,
bluff body stabilized “M” flames for different hydrogen and methane blends including pure …

[HTML][HTML] Tailoring the gain and phase of the flame transfer function through targeted convective-acoustic interference

E Æsøy, HT Nygård, NA Worth, JR Dawson - Combustion and Flame, 2022 - Elsevier
This paper investigates how targeted interference between two well characterized sources
of hydrodynamic disturbances can modify the response of premixed bluff body stabilised H …

Investigation of flame and flow response in the swirler with different divergence cups and central body under external excitation

Y Yang, G Wang, H Wu, Z Zhu, C Ma, J Li - Physics of Fluids, 2023 - pubs.aip.org
Effects of swirl divergence cup and the central bluff body on premixed flame response with
external excitation are experimentally investigated. Flame transfer functions (FTFs) …

Nonlinear response of a premixed low-swirl flame to acoustic excitation with large amplitude

W Liu, R Xue, L Zhang, Q Yang, H Wang - Combustion and Flame, 2022 - Elsevier
This paper describes an experimental investigation of the nonlinear response of a premixed
methane/air low-swirl flame to imposed acoustic excitation with perturbation amplitude up to …

Combining analytical models and LES data to determine the transfer function from swirled premixed flames

F Dupuy, M Gatti, C Mirat, L Gicquel, F Nicoud… - Combustion and …, 2020 - Elsevier
A methodology is developed where the acoustic response of a swirl stabilized flame is
obtained from a reduced set of simulations. Building upon previous analytical flame transfer …

Acoustic-convective interference in transfer functions of methane/hydrogen and pure hydrogen flames

E Æsøy, JG Aguilar, MR Bothien… - … for Gas Turbines …, 2021 - asmedigitalcollection.asme.org
We investigate the occurrence and source of modulations in the gain and phase of flame
transfer functions (FTF) measured in perfectly premixed, bluff body stabilized CH 4/H 2 and …

Flame transfer functions and dynamics of a closely confined premixed bluff body stabilized flame with swirl

HT Nygård, NA Worth - Journal of Engineering for …, 2021 - asmedigitalcollection.asme.org
The flame transfer function (FTF) and flame dynamics of a highly swirled, closely confined,
premixed flame is studied over a wide range of equivalence ratios and bulk velocities at a …

Adjoint-accelerated Bayesian inference applied to the thermoacoustic behaviour of a ducted conical flame

M Yoko, MP Juniper - Journal of Fluid Mechanics, 2024 - cambridge.org
We use Bayesian inference, accelerated by adjoint methods, to construct a quantitatively
accurate model of the thermoacoustic behaviour of a conical flame in a duct. We first perform …

Thermoacoustic instability drivers and mode transitions in a lean premixed methane-air combustor at various swirl intensities

B Zhang, M Shahsavari, Z Rao, S Yang… - Proceedings of the …, 2021 - Elsevier
In this study, an in-house developed fully compressible solver utilizing high-order numerical
discretization schemes is used to study the effects of swirl intensity on thermoacoustic …

Inferring flame transfer functions of turbulent conical flames from pressure measurements

M Yoko, MP Juniper - … : Power for Land, Sea, and Air, 2024 - asmedigitalcollection.asme.org
We use approximate Bayesian inference, accelerated by adjoint methods, to construct a
quantitatively accurate model of the thermoacoustic behaviour of a turbulent conical flame in …