Optical Diagnostics of Swirling Flame by Simultaneous Planar Laser-induced Fluorescence and High-speed Chemiluminescence Imaging of OH Radical

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Optical Diagnostics of Swirling Flame by Simultaneous Planar Laser-induced Fluorescence and High-speed Chemiluminescence Imaging of OH Radical
	Yan H(严浩); Zhang SH(张少华); Wang FY(王方仪); Yu XL(余西龙)
	2019
会议日期	JUN 17-20, 2019
会议地点	Rome, ITALY
页码	4233-4241
英文摘要	Swirl-stabilized flame is commonly used in gas turbine combustor. Under the operation conditions of interests, such flame is in turbulent regime, exhibiting quasi-periodic dynamic characteristics with one or multiple oscillation modes. We have reported a strategy to investigate the dynamics of the flame. The measurement of the swirling flame in a gas turbine model combustor is carried out by simultaneous planar laser-induced fluorescence (PLIF) and high-speed chemiluminescence (CL) imaging of OH radical, as the former technique is capable of providing highly resolved transient structure of the reaction zone of the flame while the latter is a perfect indicator of the dynamic motion of the flame. The proper orthogonal decomposition (POD) method was applied to both sets of data to unveil the main dynamics mode of both observations. The evolution of the OH* CL mode coefficients provided the information of the oscillation frequency and the momentum of the flame when the PLIF image is taken. Furthermore, the connection of the OH PLIF and OH* CL measurements were investigated by extended proper orthogonal decomposition (EPOD) method. The EPOD analysis showed a strong correlation between the reaction zone at the PLIF plane and the total OH* CL of the flame, enabling the reconstruction of the evolution of the reaction zone. By the application of the strategy above, combustor was tested under different equivalent ratio, and the dynamics of the flame were compared.
会议录	2019 PHOTONICS & ELECTROMAGNETICS RESEARCH SYMPOSIUM - SPRING (PIERS-SPRING)
资助机构	National Natural Science Foundation of China [11672359]
语种	英语
ISBN号	978-1-7281-3403-1
WOS记录号	WOS:000550769304032
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90520]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yan H,Zhang SH,Wang FY,et al. Optical Diagnostics of Swirling Flame by Simultaneous Planar Laser-induced Fluorescence and High-speed Chemiluminescence Imaging of OH Radical[C]. 见:. Rome, ITALY. JUN 17-20, 2019.