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Cellular instabilities of n-butane/air flat flames probing by PLIF-OH and PLIF-CH2O laser diagnosis
Jiang, Liqiao1,2; Gu, Cheng1; Zhou, Guangzhao1; Li, Fan1; Wang, Qianlong3
2020-10-01
发表期刊EXPERIMENTAL THERMAL AND FLUID SCIENCE
ISSN0894-1777
卷号118页码:7
通讯作者Jiang, Liqiao(jianglq@ms.giec.ac.cn)
摘要The structure and instability characteristics of non-adiabatic fuel-rich n-butane/air cellular flames on McKenna burner were experimentally investigated at atmospheric pressure. Planar Laser Induced Fluorescence (PLIF-OH and PLIF-CH2O) flame diagnosis technology was utilized to probe the flame structure under varied equivalence ratio and inflow mixture velocity respectively. Results show that, the equivalence ratio plays an important role in forming cellular flames. The flat, wrinkled and cellular flames appear in turn when increasing equivalence ratio and inflow velocity. Differed to the separated cells of cellular flames appeared in direct Digital camera images and PLIF-OH images, the PLIF-CH2O images clearly display that all cellular flames are connected. In the PLIF-OH images of cellular flames, the OH radical fluorescence signal intensity is higher in the convex region toward unburned mixture than in the concave region, but in PLIF-CH2O images, the fluorescence signal intensity is nearly unchanged in both convex and concave regions. Quantitative stand-off distance and amplitude data probed by PLIF-OH and PLIF-CH2O diagnosis together reveal that the onset of non-adiabatic n-butane/air cellular flames on flat flame burner is dominantly governed by diffusive-thermal mechanism.
关键词Cellular instability PLIF-OH PLIF-CH2O N-butane
DOI10.1016/j.expthermflusci.2020.110155
关键词[WOS]PREMIXED FLAMES ; PROPAGATION SPEEDS ; DIFFUSION ; FORMALDEHYDE ; ONSET ; AIR
收录类别SCI
语种英语
资助项目National Basic Research Program of China[2014CB239600] ; National Key R&D Program of China[2016YFE0127500] ; Science and Technology Project of Guangdong Province of China[2016A040403095]
WOS研究方向Thermodynamics ; Engineering ; Physics
项目资助者National Basic Research Program of China ; National Key R&D Program of China ; Science and Technology Project of Guangdong Province of China
WOS类目Thermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas
WOS记录号WOS:000540372900019
出版者ELSEVIER SCIENCE INC
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/27309
专题中国科学院广州能源研究所
通讯作者Jiang, Liqiao
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Prov Key Lab New & Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Tianjin Univ, State Key Lab Engines, Tianjin 300072, Peoples R China
第一作者单位中国科学院广州能源研究所
推荐引用方式
GB/T 7714
Jiang, Liqiao,Gu, Cheng,Zhou, Guangzhao,et al. Cellular instabilities of n-butane/air flat flames probing by PLIF-OH and PLIF-CH2O laser diagnosis[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2020,118:7.
APA Jiang, Liqiao,Gu, Cheng,Zhou, Guangzhao,Li, Fan,&Wang, Qianlong.(2020).Cellular instabilities of n-butane/air flat flames probing by PLIF-OH and PLIF-CH2O laser diagnosis.EXPERIMENTAL THERMAL AND FLUID SCIENCE,118,7.
MLA Jiang, Liqiao,et al."Cellular instabilities of n-butane/air flat flames probing by PLIF-OH and PLIF-CH2O laser diagnosis".EXPERIMENTAL THERMAL AND FLUID SCIENCE 118(2020):7.
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