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Effect of the fuel-air flow velocity on heat release rate of swirling non-premixed methane flames
Wang KL(王宽亮); Li F(李飞); Zou PF(邹鹏飞); Lin X(林鑫); Mao RH(毛荣海); Yu XL(余西龙)
Volume95Pages:UNSP 105465
AbstractA laboratory-scale gas turbine model combustor fueled with methane is studied experimentally with the aid of three-dimensional computed tomography of chemiluminescence (3D-CTC) and high speed (5 kHz) chemiluminescence imaging. Various fuel-lean operating conditions were tested to investigate the impact of flow velocity on heat release rate oscillation and spatial structure transition with fixed global equivalence ratio of about 0.65 and dump plane velocity of 2.9-18.3 m/s. In the study of combustion structure transition, the three-dimensional relative emissions of CH* were measured and taken as qualitative indicators of the heat release rate. This 3D measurement method utilizes CH* images from 8 directional as inputs combined with tomographic algorithms to compute the 3D distribution of CH* CL intensities. For all tested conditions, pronounced extension of inner recirculation zone (IRZ) along the nozzle is observed under the attached (V-shaped) swirl stabilized flames. During the increase of Reynolds number, the heat release zone changing obviously along the nozzle radial and axis direction, and the largest heat release plane moves downstream significantly. In addition, an intensified high-speed camera was adopted for the heat release dynamics study. Strong oscillations appeared in the flame zone that significantly affected the total heat release oscillations, and oscillation increases with the raise of Reynolds number. (C) 2019 Elsevier Masson SAS. All rights reserved.
KeywordSwirl flame Heat release Chemiluminescence 3D-CTC
Indexed BySCI ; EI
WOS IDWOS:000503313200046
WOS Research AreaEngineering, Aerospace
WOS SubjectEngineering
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China [11372329] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences [Y2201637]
ContributorLi, F
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.(Wang, Kuanliang) Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China
2.(Li, Fei
3.Lin, Xin
4.Yu, Xilong) Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100150, Peoples R China
5.(Zou, Pengfei
6.Mao, Ronghai) AECC Commercial Aircraft Engine CO LTD, R&D Ctr, Dept Discipline Engn, Shanghai 200241, Peoples R China
Recommended Citation
GB/T 7714
Wang KL,Li F,Zou PF,et al. Effect of the fuel-air flow velocity on heat release rate of swirling non-premixed methane flames[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2019,95:UNSP 105465.
APA 王宽亮,李飞,邹鹏飞,林鑫,毛荣海,&余西龙.(2019).Effect of the fuel-air flow velocity on heat release rate of swirling non-premixed methane flames.AEROSPACE SCIENCE AND TECHNOLOGY,95,UNSP 105465.
MLA 王宽亮,et al."Effect of the fuel-air flow velocity on heat release rate of swirling non-premixed methane flames".AEROSPACE SCIENCE AND TECHNOLOGY 95(2019):UNSP 105465.
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