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Cristin-resultat-ID:
2160515
Sist endret:
4. juli 2023, 08:37
NVI-rapporteringsår:
2023
Resultat
Vitenskapelig artikkel
2023
Assessment of the LES-FGM framework for capturing stable and unstable modes in a hydrogen / methane fuelled premixed combustor
Jen Zen Ho
Sandeep Jella
Mohsen Talei
Gilles Bourque
Thomas Indlekofer
og
James Dawson
Tidsskrift
Tidsskrift
Combustion and Flame
ISSN 0010-2180
e-ISSN 1556-2921
NVI-nivå 2
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Om resultatet
Om resultatet
Vitenskapelig artikkel
Publiseringsår: 2023
Publisert online: 2023
Trykket: 2023
Volum: 255
Artikkelnummer: 112904
Open Access
Lenker
Lenker
original online (doi)
https://doi.org/10.1016/j.combustflame.2023.112904
Institusjonsarkiv
hdl.handle.net/11250/3077598
Beskrivelse
Beskrivelse
Engelsk
Tittel
Assessment of the LES-FGM framework for capturing stable and unstable modes in a hydrogen / methane fuelled premixed combustor
Sammendrag
The main objective of this paper is to assess the capability of compressible Large Eddy Simulations (LES) to capture azimuthal combustion instability. The thickened flame model coupled with Flamelet Generated Manifold (FGM) tabulated chemistry is used as the combustion model. LES of an annular combustor is performed for five cases featuring stable and unstable combustion of hydrogen-methane mixtures. The unstable modes feature azimuthal instabilities and this annular combustor is used to test the LES-FGM framework. A consistent methodology is applied across all cases. It is found that LES predicts azimuthal modes for stable cases but these modes are weak and intermittent with pressure fluctuation amplitudes within the order of experimental noise. In addition, the unstable cases capture azimuthal modes that have approximately the same frequency as that of the experiment though the amplitudes of the modes are over-predicted. This suggests that the described LES-FGM framework is able to predict the onset of thermoacoustic instabilities and their qualitative changes with addition of hydrogen. © 2023 The Combustion Institute
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Bidragsytere
Bidragsytere
Jen Zen Ho
Forfatter
ved University of Melbourne
Sandeep Jella
Forfatter
ved Canada
Mohsen Talei
Forfatter
ved University of Melbourne
Gilles Bourque
Forfatter
ved Canada
Thomas Indlekofer
Forfatter
ved Termisk energi ved SINTEF Energi AS
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