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Title:
Characterization of flame stabilization modes in an ethylene-fueled supersonic combustor using time-resolved CH* chemiluminescence
Author: Yuan YM(袁越明); Zhang TC(张泰昌); Yao W(姚卫); Fan XJ(范学军); Zhang P(张鹏)
Source: PROCEEDINGS OF THE COMBUSTION INSTITUTE
Issued Date: 2017
Volume: 36, Issue:2, Pages:2919-2925
Abstract:

Flame stabilization in a Ma = 2.5 direct-connect supersonic combustor was experimentally characterized with a fixed stagnation pressure of 1.0 MPa and wide ranges of stagnation temperature (T-0) from 1200 K to 1800 K and global equivalence ratio (Phi) of ethylene/air from 0.1 to 0.8. Four typical flame stabilization modes were identified by using the time resolved CH* chemiluminescence and presented as a regime nomogram in the T-0-Phi parameter space. As increasing T-0, the range of Phi for the flame stabilization modes is widened and that for the oscillation mode is therefore narrowed. The widely used quasi-1D analysis, with the experimentally determined wall static pressure distribution as input parameters, suggests that the combustor operates in a scramjet mode when the flame is stabilized in the cavity shear layer and in a ramjet mode when the flame is in the jet-wake. The flame oscillation mode, observed only for a narrow range of Phi, was found to correlate with the combustor transition between the scramjet and ramjet modes. (C) 2016 by The Combustion Institute. Published by Elsevier Inc.

Keyword: Supersonic combustion ; Flame stabilization ; Stagtnation temperature ; Gloabal equivalence ratio ; CH* chemiluminesence
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Fan, XJ (reprint author), Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, PR, Peoples R China.
Correspondent Email: xfan@imech.ac.cn
DOI: 10.1016/j.proci.2016.07.040
DOC Type: Article
WOS Subject: Thermodynamics ; Energy & Fuels ; Engineering, Chemical ; Engineering, Mechanical
WOS Subject Extended: Thermodynamics ; Energy & Fuels ; Engineering
WOS Keyword Plus: SCRAMJET EXPERIMENT ; BLOWOUT LIMITS ; TRANSITION ; KEROSENE ; ENGINE
WOS ID: WOS:000397458900144
ISSN: 1540-7489
Funder: National Nature Science Foundation of China [91,016,005, 11,502,270] ; RGC/GRF [PolyU 152,217/14E] ; Central Research Grant (G-YBGA)
Rank: [Yuan, Yueming; Zhang, Taichang; Yao, Wei; Fan, Xuejun] Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, PR, Peoples R China; [Zhang, Peng] Hong Kong Polytechn Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
Classification: 一类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/72133
Appears in Collections:高温气体动力学国家重点实验室_期刊论文

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Recommended Citation:
Yuan YM,Zhang TC,Yao W,et al. Characterization of flame stabilization modes in an ethylene-fueled supersonic combustor using time-resolved CH* chemiluminescence[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE,2017-01-01,36(2):2919-2925.
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