Effects of Pilot Injection on Ignition Performance for F-24/ATJ Fuel Blends

Kim, Jeongwon; Mayhew, Eric; Coburn, Vincent; Temme, Jacob; Kweon, Chol-Bum M.

doi:10.2514/6.2024-1243

AIAA SCITECH 2024 Forum 2024

DOI: 10.2514/6.2024-1243

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Effects of Pilot Injection on Ignition Performance for F-24/ATJ Fuel Blends

Jeongwon Kim,

Eric Mayhew,

Vincent Coburn

et al.

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2024

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Cited by 2 publications

References 29 publications

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Secondary size distributions for single drop impacts at high wall superheat

Werner,

Mayhew,

Kim

et al. 2024

Exp Fluids

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The impingement of liquid sprays on hot walls is used extensively in both spray-cooling systems and in combustor fuel injection applications. At low and moderate wall temperatures, the secondary size distributions have been reported in the literature. For high wall superheat conditions, particularly for real multicomponent fuels, this secondary size distribution has received less attention. Understanding the resultant size distribution for a spray-wall impact is key to capturing vaporization and local mixture for fuel-spray impingement. In this study, single drop impacts for a range of single-component (n-decane) and multicomponent jet fuel (F-24) are characterized through dual-view imaging. Secondary droplets are captured for impact Weber numbers of 100–600 and wall temperatures spanning the nucleate and film boiling (Leidenfrost) regimes. Imaging through a transparent sapphire substrate is used to capture the impact phenomena and impact-induced breakup of impacting drops. We report empirical correlations for the secondary droplet size for single-component (n-decane) and multicomponent (F-24) liquid fuels with varying wall temperature to provide validation datasets for spray-wall simulations.

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Secondary size distributions for single drop impacts at high wall superheat

Werner,

Mayhew,

Kim

et al. 2024

Exp Fluids

View full text Add to dashboard Cite

show abstract

Effects of pilot injection on ignition performance for F-24/Gasoline fuel blends

Kim,

Mayhew,

Coburn

et al. 2024

Proceedings of the Combustion Institute

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Effects of Pilot Injection on Ignition Performance for F-24/ATJ Fuel Blends

Cited by 2 publications

References 29 publications

Secondary size distributions for single drop impacts at high wall superheat

Secondary size distributions for single drop impacts at high wall superheat

Effects of pilot injection on ignition performance for F-24/Gasoline fuel blends

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