TY - GEN
T1 - Combustion instabilities in a lean premixed pre-vaporized combustor at high-pressure high-Temperature
AU - Han, Xiao
AU - Hui, Xin
AU - Zhang, Chi
AU - Lin, Yuzhen
AU - He, Pei
AU - Sung, Chih Jen
N1 - Publisher Copyright:
Copyright © 2017 ASME.
PY - 2017
Y1 - 2017
N2 - Experimental results correlating combustion instability and staging ratio in a RP-3 fueled lean premixed pre-vaporized (LPP) combustor is presented. All the experiments are operated at highpressure and high-Temperature conditions, and processed data has been collected and classified by the staging ratio. A lowfrequency oscillation is found in the conditions that the main stage and pilot stage work together. There are two discrete frequencies laying in 50∼120 Hz and 420∼470 Hz, the former changes with staging ratio (SR) while the latter remains constant. Sensitivity analysis of flame model reveals that the lowfrequency oscillation at 50∼120 Hz is highly suspected to be caused by an intrinsic mode of this combustor. RANS simulation of flame structure finds that delay time could be extended by decreasing SR, which is consistent with the theoretical analysis.
AB - Experimental results correlating combustion instability and staging ratio in a RP-3 fueled lean premixed pre-vaporized (LPP) combustor is presented. All the experiments are operated at highpressure and high-Temperature conditions, and processed data has been collected and classified by the staging ratio. A lowfrequency oscillation is found in the conditions that the main stage and pilot stage work together. There are two discrete frequencies laying in 50∼120 Hz and 420∼470 Hz, the former changes with staging ratio (SR) while the latter remains constant. Sensitivity analysis of flame model reveals that the lowfrequency oscillation at 50∼120 Hz is highly suspected to be caused by an intrinsic mode of this combustor. RANS simulation of flame structure finds that delay time could be extended by decreasing SR, which is consistent with the theoretical analysis.
UR - https://www.scopus.com/pages/publications/85030662384
U2 - 10.1115/GT2017-65190
DO - 10.1115/GT2017-65190
M3 - 会议稿件
AN - SCOPUS:85030662384
T3 - Proceedings of the ASME Turbo Expo
BT - Combustion, Fuels and Emissions
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017
Y2 - 26 June 2017 through 30 June 2017
ER -