Flame Structure and Dynamics in a Premixed Dual-Mode Scramjet Combustor from Fluorescence Imaging

被引：7

作者：

Allison, Patton M. ^{[1
]}

Frederickson, Kraig ^{[1
]}

Kirik, Justin W. ^{[2
]}

Rockwell, Robert D. ^{[2
]}

Goyne, Christopher P. ^{[2
]}

Lempert, Walter R. ^{[1
]}

Sutton, Jeffrey A. ^{[1
]}

机构：

[1] Ohio State Univ, Mech & Aerosp Engn, Columbus, OH 43210 USA

[2] Univ Virginia, Mech & Aerosp Engn, Charlottesville, VA 22904 USA

来源：

JOURNAL OF PROPULSION AND POWER | 2019年 / 35卷 / 03期

关键词：

PULSE-BURST LASER; SUPERSONIC COMBUSTION; SPECTROSCOPY; VISUALIZATION; HYDROCARBONS; FORMALDEHYDE; IGNITION;

D O I：

10.2514/1.B37057

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Formaldehyde (CH2O) planar laser- induced fluorescence (PLIF) imaging was performed in a premixed, ethylenefueled dual- mode scramjet combustor to study the flame structure and dynamic flame behavior. CH2OPLIF is used as a marker to provide information on the structure and position of the lower-temperature portion of the reaction zone. Low-repetition-rate (10 Hz) measurements were acquired at several cross-flow planes along the axial flow direction. Statistical analysis of the CH2O topology indicates sparse concentrations of formaldehyde that are intermittently detected by the PLIF measurement. Comparisons between previous large-eddy simulations, laboratory-scale flames, and the current experimental measurements indicate discrepancies between the expected and measured formaldehyde concentrations and structure. High-speed formaldehyde PLIF also was conducted at 50 kHz to further investigate the intermittency of the formaldehyde layers in the flow.

引用

页码：552 / 564

页数：13

共 50 条

[21] Research on the operating boundary of the dual mode scramjet with a constant area combustor through thermodynamic cycle analysis
Wang, Youyin
Hou, Wenxin
Zhang, Junlong
Tang, Jingfeng
Chang, Juntao
Bao, Wen
ENERGY, 2021, 216
[22] Simplified Approach to Identify Thermal Choking Limits of a Dual-Mode Variable Area Combustor
Rahimi, M. J.
Chelliah, H. K.
AIAA JOURNAL, 2018, 56 (05) : 2091 - 2095
[23] Performance study of a central reentrant step pilot-flameholder in a dual-mode combustor
Liu, Chen
Fan, Yuxin
AEROSPACE SCIENCE AND TECHNOLOGY, 2024, 147
[24] Ignition dynamics and combustion mode transitions in a rocket-based combined cycle combustor operating in the ramjet/scramjet mode
An, Bin
Wang, Zhenguo
Sun, Mingbo
AEROSPACE SCIENCE AND TECHNOLOGY, 2021, 118
[25] Experimental study on selecting controlled parameter for the optimal wall pressure of dual-mode combustor
Jiao, Guiqian
Song, Wenyan
Zeng, Xianglong
Fu, Qiang
Li, Hantao
Li, Jianping
PHYSICS OF FLUIDS, 2024, 36 (05)
[26] Numerical Investigation of Combustion Mechanism with Multi-Position Injection in a Dual-Mode Combustor
Xi, Wenxiong
Xu, Hui
Dong, Tianyang
Lin, Zhiyong
Liu, Jian
AEROSPACE, 2023, 10 (07)
[27] Simultaneous imaging of atherosclerotic plaque composition and structure with dual-mode photoacoustic and optical coherence tomography
Shang, Shanshan
Chen, Zhongjiang
Zhao, Yue
Yang, Sihua
Xing, Da
OPTICS EXPRESS, 2017, 25 (02): : 530 - 539
[28] Laser-induced Fluorescence on non-premixed chlorine-containing Flames Imaging a Flame Structure of Methane-Dichloromethane Flames
Krasselt, C.
Voss, S.
Trimis, D.
Krause, H.
Trimis, D.
28 DEUTSCHER FLAMMENTAG: VERBRENNUNG UND FEUERUNG, 2017, 2017, 2302 : 457 - 467
[29] Experimental and numerical investigation on hysteresis characteristics and formation mechanism for a variable geometry dual-mode combustor
Feng, Shuo
Chang, Juntao
Zhang, Chenlin
Wang, Youyin
Ma, Jicheng
Bao, Wen
AEROSPACE SCIENCE AND TECHNOLOGY, 2017, 67 : 96 - 104
[30] Flow field characteristics analysis and combustion modes classification for a strut/cavity dual-mode combustor
Zhang, Chenlin
Chang, Juntao
Zhang, Yuanshi
Wang, Youyin
Bao, Wen
ACTA ASTRONAUTICA, 2017, 137 : 44 - 51

← 1 2 3 4 5 →