TY - GEN
T1 - Study on the low-temperature chemistry and Heat Release Rate of High-pressure Diethyl Ether diffusion Cool Flame
AU - Thawko, Andy
AU - Wang, Ziyu
AU - Akiba, Takaki
AU - Mei, Bowen
AU - Ju, Yiguang
N1 - Publisher Copyright:
© 2024 by Andy Thawko, Ziyu Wang, Takaki Akiba, Bowen Mei, Yiguang Ju.
PY - 2024
Y1 - 2024
N2 - Pressure is an important parameter for cool flames, and it has a significant effect on the low-temperature chemistry and HRR. The pressure effect on diffusion cool flame of diethy lether is studied both experimentally and numerically in this work. Higher pressure significantly increases the cool flame extinction limits, highlighting a substantial impact on low-temperature chemistry. The pressure, P, and strain rate, a, correlate with the cool flame heat release rate, Q, as Q ~ √ap P, which is different from the known hot flames correlation, Q ~ √ap. Kinetic analysis shows that pressure increase stabilizes QOOH and promotes the second O2 addition to QOOH. Thus, multiple OH radicals are produced in this chain branching pathway, rather than one OH in QOOH decomposition, resulting in a low temperature reactivity increase. Both experiment and numerical modeling show that increasing pressure enhances the low-temperature chemistry.
AB - Pressure is an important parameter for cool flames, and it has a significant effect on the low-temperature chemistry and HRR. The pressure effect on diffusion cool flame of diethy lether is studied both experimentally and numerically in this work. Higher pressure significantly increases the cool flame extinction limits, highlighting a substantial impact on low-temperature chemistry. The pressure, P, and strain rate, a, correlate with the cool flame heat release rate, Q, as Q ~ √ap P, which is different from the known hot flames correlation, Q ~ √ap. Kinetic analysis shows that pressure increase stabilizes QOOH and promotes the second O2 addition to QOOH. Thus, multiple OH radicals are produced in this chain branching pathway, rather than one OH in QOOH decomposition, resulting in a low temperature reactivity increase. Both experiment and numerical modeling show that increasing pressure enhances the low-temperature chemistry.
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U2 - 10.2514/6.2024-2026
DO - 10.2514/6.2024-2026
M3 - Conference contribution
AN - SCOPUS:85196803355
SN - 9781624107115
T3 - AIAA SciTech Forum and Exposition, 2024
BT - AIAA SciTech Forum and Exposition, 2024
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA SciTech Forum and Exposition, 2024
Y2 - 8 January 2024 through 12 January 2024
ER -