TY - GEN
T1 - Kinetics and Extinction of Non-premixed Cool Flames of Dimethyl Ether at High Pressure
AU - Wang, Ziyu
AU - Yan, Chao
AU - Lin, Ying
AU - Jiang, Bo
AU - Zhou, Mengni
AU - Liu, Ning
AU - Ju, Yiguang
N1 - Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc.. All rights reserved.
PY - 2022
Y1 - 2022
N2 - The growing demand of clean and efficient propulsion and energy systems has sparked an interest in understanding the low-temperature combustion at high-pressure. Cool flame extinction limits and flame structures at elevated pressure conditions provide insights of the low-temperature and high-pressure fuel reactivity. Moreover, pressure has a significant impact on cool flame chemistry. Dimethyl ether (DME) with strong low-temperature chemistry, has been chosen to study its non-premixed cool flame at high pressure. This paper investigates the effects of pressure on cool flame structure, extinction, and transition limits of DME experimentally and computationally. Both experimental data and numerical simulations show that the higher pressure has higher cool flame extinction strain rates. Furthermore, it is shown that the reignition transition from cool flame to hot flame also occur at higher strain rates with pressure. The detailed kinetic analyses have also been studied to show how pressure affects the chemistry of cool flames.
AB - The growing demand of clean and efficient propulsion and energy systems has sparked an interest in understanding the low-temperature combustion at high-pressure. Cool flame extinction limits and flame structures at elevated pressure conditions provide insights of the low-temperature and high-pressure fuel reactivity. Moreover, pressure has a significant impact on cool flame chemistry. Dimethyl ether (DME) with strong low-temperature chemistry, has been chosen to study its non-premixed cool flame at high pressure. This paper investigates the effects of pressure on cool flame structure, extinction, and transition limits of DME experimentally and computationally. Both experimental data and numerical simulations show that the higher pressure has higher cool flame extinction strain rates. Furthermore, it is shown that the reignition transition from cool flame to hot flame also occur at higher strain rates with pressure. The detailed kinetic analyses have also been studied to show how pressure affects the chemistry of cool flames.
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U2 - 10.2514/6.2022-0818
DO - 10.2514/6.2022-0818
M3 - Conference contribution
AN - SCOPUS:85123374742
SN - 9781624106316
T3 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
BT - AIAA SciTech Forum 2022
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Y2 - 3 January 2022 through 7 January 2022
ER -