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Application of the LIF/Mie Technique to an Aeronautic Kerosene Jet A-1 Spray Injected under Relight Conditions

Doublet, Pierre ; Garcia, Sebastien LU ; Orain, Mikael and Berrocal, Edouard LU (2025) ILASS-Europe 2025
Abstract
Certification process of an aircraft engine requires the engine to be able to relight under high-altitude conditions. This capability is strongly affected by the characteristics of the spray injected into the combustion chamber, by means of an aeronautical injection system. The understanding of the atomization process is a key factor in order to forecast the engine's relight capability. Among the parameters of interest (gas-phase velocity, concentration and liquid volume fraction), the droplet size is essential. In the literature, this parameter is commonly characterized under ambient temperature and pressure conditions. The present study focuses on the application of the LIF/Mie technique for the characterization of an aeronautic kerosene... (More)
Certification process of an aircraft engine requires the engine to be able to relight under high-altitude conditions. This capability is strongly affected by the characteristics of the spray injected into the combustion chamber, by means of an aeronautical injection system. The understanding of the atomization process is a key factor in order to forecast the engine's relight capability. Among the parameters of interest (gas-phase velocity, concentration and liquid volume fraction), the droplet size is essential. In the literature, this parameter is commonly characterized under ambient temperature and pressure conditions. The present study focuses on the application of the LIF/Mie technique for the characterization of an aeronautic kerosene Jet A-1 spray injected under relight conditions. A qualitative study of the effect of liquid temperature and injection pressure on the Sauter Mean Diameter is first presented. The technique is then applied under critical high-altitude conditions and provide quantitative SMD mappings. Comparisons with PDA measurements exhibit a very good agreement, which validates the LIF/Mie technique as a reliable tool for studying sprays in these harsh conditions. (Less)
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author
; ; and
organization
publishing date
type
Contribution to conference
publication status
published
subject
pages
7 pages
conference name
ILASS-Europe 2025
conference location
Lund, Sweden
conference dates
2025-08-31 - 2025-09-04
language
English
LU publication?
yes
id
615cd5b5-1d28-48ea-8791-cdf5da8af5d9
alternative location
https://lu.app.box.com/s/90tpn3k5rpkwyo5w6bq8nanwtrngsmcc
date added to LUP
2026-03-09 15:58:46
date last changed
2026-03-12 13:13:11
@misc{615cd5b5-1d28-48ea-8791-cdf5da8af5d9,
  abstract     = {{Certification process of an aircraft engine requires the engine to be able to relight under high-altitude conditions. This capability is strongly affected by the characteristics of the spray injected into the combustion chamber, by means of an aeronautical injection system. The understanding of the atomization process is a key factor in order to forecast the engine's relight capability. Among the parameters of interest (gas-phase velocity, concentration and liquid volume fraction), the droplet size is essential. In the literature, this parameter is commonly characterized under ambient temperature and pressure conditions. The present study focuses on the application of the LIF/Mie technique for the characterization of an aeronautic kerosene Jet A-1 spray injected under relight conditions. A qualitative study of the effect of liquid temperature and injection pressure on the Sauter Mean Diameter is first presented. The technique is then applied under critical high-altitude conditions and provide quantitative SMD mappings. Comparisons with PDA measurements exhibit a very good agreement, which validates the LIF/Mie technique as a reliable tool for studying sprays in these harsh conditions.}},
  author       = {{Doublet, Pierre and Garcia, Sebastien and Orain, Mikael and Berrocal, Edouard}},
  language     = {{eng}},
  month        = {{08}},
  title        = {{Application of the LIF/Mie Technique to an Aeronautic Kerosene Jet A-1 Spray Injected under Relight Conditions}},
  url          = {{https://lu.app.box.com/s/90tpn3k5rpkwyo5w6bq8nanwtrngsmcc}},
  year         = {{2025}},
}