TY - GEN
T1 - Effects of F-24/ATJ blend composition on ignition kinetics at low temperatures
AU - Kim, Keunsoo
AU - Min, Kyungwook
AU - Lee, Tonghun
AU - Temme, Jacob
AU - Kweon, Chol Bum M.
N1 - Publisher Copyright:
© 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
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U2 - 10.2514/6.2020-0178
DO - 10.2514/6.2020-0178
M3 - Conference contribution
AN - SCOPUS:85092388362
SN - 9781624105951
T3 - AIAA Scitech 2020 Forum
BT - AIAA Scitech 2020 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2020
Y2 - 6 January 2020 through 10 January 2020
ER -