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Predictions of Spray Combustion using Conventional Category A Fuels and Exploratory Category C Fuels

Pignatelli, Francesco LU ; Passad, Martin LU ; Åkerblom, Arvid LU ; Nilsson, Thommie LU ; Nilsson, Elna J. K. LU orcid and Fureby, Christer LU (2023) AIAA SCITECH 2023 Forum
Abstract
Aviation currently contributes about 3% of the world’s CO2 emissions, 5% of the global warming, and 35% of the trade. Reducing the emissions and the global warming from aviation is thus essential. Many approaches to achieve this goal are underway, including H2, fuel cells, and batteries, but also by replacing the fossil jet fuel with sustainable jet fuel from non-fossil feedstocks. This involves many challenges, and among them we have the issue of current jet engines being developed for existing fossil jet fuels. To facilitate the change towards sustainable jet fuel, typically having different thermophysical and combustion properties compared to fossil jet fuels, we need to analyze the sensitivity of combustion to other fuels, having a... (More)
Aviation currently contributes about 3% of the world’s CO2 emissions, 5% of the global warming, and 35% of the trade. Reducing the emissions and the global warming from aviation is thus essential. Many approaches to achieve this goal are underway, including H2, fuel cells, and batteries, but also by replacing the fossil jet fuel with sustainable jet fuel from non-fossil feedstocks. This involves many challenges, and among them we have the issue of current jet engines being developed for existing fossil jet fuels. To facilitate the change towards sustainable jet fuel, typically having different thermophysical and combustion properties compared to fossil jet fuels, we need to analyze the sensitivity of combustion to other fuels, having a wider range of thermophysical specifications. Here, we examine combustion of n-heptane, n-dodecane, Jet A, and two test fuels, C1 and C5 in three different combustors. The first and second cases are axisymmetric and rectilinear pre-vaporized premixed bluff-body stabilized flames, whereas the third is a single sector helicopter combustor for liquid fuel. A Finite Rate Chemistry (FRC) Large Eddy Simulation (LES) model is used together with small comprehensive reaction mechanisms of ~300 reactions. Comparison with experimental data is performed for the pre-vaporized combustor configurations. Good agreement is generally observed, and small to marginal differences in combustion behavior is observed between the different fuels. (Less)
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author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
AIAA SCITECH 2023 Forum
publisher
American Institute of Aeronautics and Astronautics
conference name
AIAA SCITECH 2023 Forum
conference location
National Harbor, MD, United States
conference dates
2023-01-23 - 2023-01-27
ISBN
978-1-62410-699-6
DOI
10.2514/6.2023-1486
language
English
LU publication?
yes
id
f06b57b0-d8ef-4503-922f-2fa11c1d09a2
date added to LUP
2023-05-08 09:28:39
date last changed
2023-05-09 02:32:01
@inproceedings{f06b57b0-d8ef-4503-922f-2fa11c1d09a2,
  abstract     = {{Aviation currently contributes about 3% of the world’s CO2 emissions, 5% of the global warming, and 35% of the trade. Reducing the emissions and the global warming from aviation is thus essential. Many approaches to achieve this goal are underway, including H2, fuel cells, and batteries, but also by replacing the fossil jet fuel with sustainable jet fuel from non-fossil feedstocks. This involves many challenges, and among them we have the issue of current jet engines being developed for existing fossil jet fuels. To facilitate the change towards sustainable jet fuel, typically having different thermophysical and combustion properties compared to fossil jet fuels, we need to analyze the sensitivity of combustion to other fuels, having a wider range of thermophysical specifications. Here, we examine combustion of n-heptane, n-dodecane, Jet A, and two test fuels, C1 and C5 in three different combustors. The first and second cases are axisymmetric and rectilinear pre-vaporized premixed bluff-body stabilized flames, whereas the third is a single sector helicopter combustor for liquid fuel. A Finite Rate Chemistry (FRC) Large Eddy Simulation (LES) model is used together with small comprehensive reaction mechanisms of ~300 reactions. Comparison with experimental data is performed for the pre-vaporized combustor configurations. Good agreement is generally observed, and small to marginal differences in combustion behavior is observed between the different fuels.}},
  author       = {{Pignatelli, Francesco and Passad, Martin and Åkerblom, Arvid and Nilsson, Thommie and Nilsson, Elna J. K. and Fureby, Christer}},
  booktitle    = {{AIAA SCITECH 2023 Forum}},
  isbn         = {{978-1-62410-699-6}},
  language     = {{eng}},
  publisher    = {{American Institute of Aeronautics and Astronautics}},
  title        = {{Predictions of Spray Combustion using Conventional Category A Fuels and Exploratory Category C Fuels}},
  url          = {{http://dx.doi.org/10.2514/6.2023-1486}},
  doi          = {{10.2514/6.2023-1486}},
  year         = {{2023}},
}