Effects of F-24/ATJ blend composition on ignition kinetics at low temperatures

Keunsoo Kim, Kyungwook Min, Tonghun Lee, Jacob Temme, Chol Bum M. Kweon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The low temperature autoignition characteristics of military aviation fuel (F-24), alternative alcohol to jet (ATJ) fuel, and four volumetric blends of the two fuels are investigated by analyzing chemical ignition delay using a rapid compression machine (RCM). Ignition delay measurements were performed to investigate the effects of chemical composition and blend ratio at compressed pressures of Pc=10, 20, and 30 bar, equivalence ratios of ϕ= 0.5 and 1.0 in synthetic dry air, from low to intermediate temperatures (620K ≤ Tc ≤ 720K). Different chemical structures such as normal alkanes and isoalkanes have an influence on autoignition and non-linear variation of reactivity has been observed with respect to blending ratio. Blending ratio and ignition characteristics do not correlate linearly, and this is mainly attributed to the second stage ignition delay. Investigation of blending effects between two different fuels can offer guidelines in developing a multi-fuel capable combustor for mixtures of various fuel blends.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
DOIs
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF

Conference

ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States
CityOrlando
Period1/6/201/10/20

ASJC Scopus subject areas

  • Aerospace Engineering

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