TY - GEN
T1 - Time-frequency domain analysis study on dynamic response characteristics of kerosene-fueled scramjet combustor
AU - Han, Xiaobao
AU - Li, Huacong
AU - Jia, Qiusheng
AU - Xiao, Hongliang
AU - Fu, Qiang
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/9/14
Y1 - 2017/9/14
N2 - Scramjet combustor states parameters dynamic characteristics study have great importance in scramjet accuracy thermodynamics regulations. In this investigation the dynamic response characteristics of kerosene-fueled scramjet combustor wall pressures are studied by time-frequency domain analysis method. Firstly, the dynamic response of scramjet combustor wall pressure is stimulated by step input of kerosene under different fuel equivalence ratio by using the direct-connected test facility. Secondly, the time-frequency spectrum of the dynamic response data are analyzed by using Hilbert-Huang transform (HHT) method. In HHT analysis, the raw experiment response data are filtered and decomposed into intrinsic mode functions (IMF) in time domain by the Empirical mode decomposition (EMD), then Hilbert spectral analysis (HSA) examine each IMF's instantaneous frequency as functions of time. Finally, time-frequency domain character distributions with different fuel equivalence ratio(ER) and wall pressure measurement location are given and analyzed by comparison study.
AB - Scramjet combustor states parameters dynamic characteristics study have great importance in scramjet accuracy thermodynamics regulations. In this investigation the dynamic response characteristics of kerosene-fueled scramjet combustor wall pressures are studied by time-frequency domain analysis method. Firstly, the dynamic response of scramjet combustor wall pressure is stimulated by step input of kerosene under different fuel equivalence ratio by using the direct-connected test facility. Secondly, the time-frequency spectrum of the dynamic response data are analyzed by using Hilbert-Huang transform (HHT) method. In HHT analysis, the raw experiment response data are filtered and decomposed into intrinsic mode functions (IMF) in time domain by the Empirical mode decomposition (EMD), then Hilbert spectral analysis (HSA) examine each IMF's instantaneous frequency as functions of time. Finally, time-frequency domain character distributions with different fuel equivalence ratio(ER) and wall pressure measurement location are given and analyzed by comparison study.
KW - combustor
KW - dynamic characteristic
KW - HHT
KW - scramjet
KW - time-frequency analysis
UR - https://www.scopus.com/pages/publications/85032342715
U2 - 10.1109/ICMAE.2017.8038668
DO - 10.1109/ICMAE.2017.8038668
M3 - 会议稿件
AN - SCOPUS:85032342715
T3 - 2017 8th International Conference on Mechanical and Aerospace Engineering, ICMAE 2017
SP - 340
EP - 344
BT - 2017 8th International Conference on Mechanical and Aerospace Engineering, ICMAE 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Mechanical and Aerospace Engineering, ICMAE 2017
Y2 - 22 July 2017 through 25 July 2017
ER -