Experimental Study on Hydrodynamic Instability Characteristics of N-2-Diluted n-C4H10/Air Flat Flames

doi:10.1007/s10494-021-00303-9

GIEC OpenIR

	Experimental Study on Hydrodynamic Instability Characteristics of N-2-Diluted n-C4H10/Air Flat Flames
	Jiang, Liqiao1,2 ; Zhou, Guangzhao 1; Huo, Jiepeng 1; Gu, Chen 1; Chen, Xiaoli 1
	2021-11-17
发表期刊	FLOW TURBULENCE AND COMBUSTION
ISSN	1386-6184
页码	23
通讯作者	Jiang, Liqiao(jianglq@ms.giec.ac.cn)
摘要	The hydrodynamic instability characteristics of non-adiabatic N-2-diluted n-butane/air flames generated on McKenna burner were investigated experimentally under atmosphere pressure. In order to capture the quantitative structure of cellular flames, planar laser induced fluorescence technology (OH-PLIF and CH2O-PLIF) was employed, as well as the chemiluminescence imaging was used to record flame morphology directly. The results show that the hydrodynamic instability of stoichiometric (phi = 1.0) n-butane/air flames can be significantly enhanced by N-2 dilution. In addition, the increased mixture flow velocity and the reduced equivalence ratio of lean mixtures will enhance hydrodynamic instability. Moreover, the observed flame morphologies are connected wrinkles instead of independent-cells with lean and stoichiometric mixtures. It is probable that the wrinkled flames mainly caused by hydrodynamic instability cannot induce the extinction of high-temperature oxidant reaction in concave regions solely due to the weakened effect of preferential diffusion. The instability mechanism analysis shows that, the remarkably reduced local flame speed and the much deformed local flow field ahead of n-butane/air/N-2 dilution flames by increasing N-2 dilution ratio play an important role in enhancing hydrodynamic instability. It also indicates that the heat loss reduced more in concave regions than in convex regions toward unburnt mixtures is helpful to enhance the suppression effect of hydrodynamic instability.
关键词	Hydrodynamic instability N-2-dilution n-Butane Flat flame burner PLIF
DOI	10.1007/s10494-021-00303-9
关键词[WOS]	POROUS-PLUG BURNER ; PREMIXED FLAMES ; LAMINAR ; STABILITY ; PROPAGATION ; ONSET ; FUEL ; AIR
收录类别	SCI
语种	英语
资助项目	National Basic Research Program of China[2014CB239600] ; Science and Technology Planning Project of Guangdong Province of China[2016A040403095]
WOS研究方向	Thermodynamics ; Mechanics
项目资助者	National Basic Research Program of China ; Science and Technology Planning Project of Guangdong Province of China
WOS类目	Thermodynamics ; Mechanics
WOS记录号	WOS:000719798400001
出版者	SPRINGER
引用统计	被引频次：1[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/344007/35259
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
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,Zhou, Guangzhao,Huo, Jiepeng,et al. Experimental Study on Hydrodynamic Instability Characteristics of N-2-Diluted n-C4H10/Air Flat Flames[J]. FLOW TURBULENCE AND COMBUSTION,2021:23.
APA	Jiang, Liqiao,Zhou, Guangzhao,Huo, Jiepeng,Gu, Chen,&Chen, Xiaoli.(2021).Experimental Study on Hydrodynamic Instability Characteristics of N-2-Diluted n-C4H10/Air Flat Flames.FLOW TURBULENCE AND COMBUSTION,23.
MLA	Jiang, Liqiao,et al."Experimental Study on Hydrodynamic Instability Characteristics of N-2-Diluted n-C4H10/Air Flat Flames".FLOW TURBULENCE AND COMBUSTION (2021):23.