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Large Eddy Simulation of a model jet-engine swirl-stabilized flame using sustainable aviation fuels

Vauquelin, Pierre LU orcid ; Cakir, Bora O. LU orcid ; Sanned, David LU ; Prakash, Megha LU orcid ; Hannappel, Jan Peter LU ; Subash, Arman LU ; Richter, Mattias LU ; Bai, Xue Song LU and Fureby, Christer LU (2025) AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025 In AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
Abstract

Sustainable Aviation Fuels (SAF) typically exhibit a composition that differs significantly from conventional jet fuels. These variations in chemical makeup influence the thermophysical and reactive properties of these propellants. In this study, Finite-Rate Chemistry (FRC) Large Eddy Simulations (LES) are employed to investigate turbulent spray flames from a Triple Annular Research Swirler (TARS) burner. Flush-mounted into a quadratic combustion chamber, the TARS burner reproduces the swirl-stabilized combustion process typical of modern jet engines combustors. Using the recently developed Z79 mechanisms, a collection of compact pathway-centric chemical reaction mechanisms, combined with a reduced NOx mechanism of 19 steps,... (More)

Sustainable Aviation Fuels (SAF) typically exhibit a composition that differs significantly from conventional jet fuels. These variations in chemical makeup influence the thermophysical and reactive properties of these propellants. In this study, Finite-Rate Chemistry (FRC) Large Eddy Simulations (LES) are employed to investigate turbulent spray flames from a Triple Annular Research Swirler (TARS) burner. Flush-mounted into a quadratic combustion chamber, the TARS burner reproduces the swirl-stabilized combustion process typical of modern jet engines combustors. Using the recently developed Z79 mechanisms, a collection of compact pathway-centric chemical reaction mechanisms, combined with a reduced NOx mechanism of 19 steps, conventional Jet A and two alternative fuels, referred to as C1 and C5, are compared in lean conditions. Additionally, ethanol is examined for validation purposes using the novel Z74 reaction mechanism. Experimental data collected during preliminary measurement campaigns include CH* chemiluminescence images for ethanol and Jet A, as well as CO2 emissions from the exhaust gases for Jet A. The V-shaped flame impinging the combustion chamber walls, as observed in the experiments, is successfully reproduced by the LES. Regarding carbon dioxide emissions from the exhaust gas, a promising agreement is found between LES predictions and experimental data.

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author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
series title
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
pages
27 pages
publisher
American Institute of Aeronautics and Astronautics
conference name
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025
conference location
Orlando, United States
conference dates
2025-01-06 - 2025-01-10
external identifiers
  • scopus:105001150005
ISBN
978-1-62410-723-8
DOI
10.2514/6.2025-0163
language
English
LU publication?
yes
id
d1241e09-4f58-438e-9f9c-f368a288cce2
date added to LUP
2025-05-20 23:17:53
date last changed
2025-05-27 11:40:20
@inproceedings{d1241e09-4f58-438e-9f9c-f368a288cce2,
  abstract     = {{<p>Sustainable Aviation Fuels (SAF) typically exhibit a composition that differs significantly from conventional jet fuels. These variations in chemical makeup influence the thermophysical and reactive properties of these propellants. In this study, Finite-Rate Chemistry (FRC) Large Eddy Simulations (LES) are employed to investigate turbulent spray flames from a Triple Annular Research Swirler (TARS) burner. Flush-mounted into a quadratic combustion chamber, the TARS burner reproduces the swirl-stabilized combustion process typical of modern jet engines combustors. Using the recently developed Z79 mechanisms, a collection of compact pathway-centric chemical reaction mechanisms, combined with a reduced NOx mechanism of 19 steps, conventional Jet A and two alternative fuels, referred to as C1 and C5, are compared in lean conditions. Additionally, ethanol is examined for validation purposes using the novel Z74 reaction mechanism. Experimental data collected during preliminary measurement campaigns include CH* chemiluminescence images for ethanol and Jet A, as well as CO2 emissions from the exhaust gases for Jet A. The V-shaped flame impinging the combustion chamber walls, as observed in the experiments, is successfully reproduced by the LES. Regarding carbon dioxide emissions from the exhaust gas, a promising agreement is found between LES predictions and experimental data.</p>}},
  author       = {{Vauquelin, Pierre and Cakir, Bora O. and Sanned, David and Prakash, Megha and Hannappel, Jan Peter and Subash, Arman and Richter, Mattias and Bai, Xue Song and Fureby, Christer}},
  booktitle    = {{AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025}},
  isbn         = {{978-1-62410-723-8}},
  language     = {{eng}},
  publisher    = {{American Institute of Aeronautics and Astronautics}},
  series       = {{AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025}},
  title        = {{Large Eddy Simulation of a model jet-engine swirl-stabilized flame using sustainable aviation fuels}},
  url          = {{http://dx.doi.org/10.2514/6.2025-0163}},
  doi          = {{10.2514/6.2025-0163}},
  year         = {{2025}},
}