Combustion characteristics of premixed C1-C4 alkane jet flames between two parallel walls

被引：0
|
作者：
Cao H. [1 ]
Nian Z. [1 ,2 ]
Yang H. [2 ,3 ]
Su H. [1 ,2 ]
Wang X. [2 ,3 ]
Zhao D. [2 ,3 ]
机构：
[1] School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 450001, Henan
[2] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, Guangdong
[3] Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou, 510640, Guangdong
来源：
Huagong Xuebao/CIESC Journal | 2016年 / 67卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Alkane; Combustion characteristic; Flame stability; Fuel; Microscale; Pulsating flame;
D O I：
10.11949/j.issn.0438-1157.20160147
中图分类号：
学科分类号：
摘要：
The combustion characteristics of premixed C1-C4 alkane jet flames were studied experimentally with a slit burner between two parallel walls. The effects of wall temperature, the distance between two walls, equivalence ratio and fuel type on flame pattern and stability were investigated. The flame images were captured by using a high-speed charge-coupled device camera. The results indicated that the flames experienced three states with the decrease of the distance between the walls, i.e., stable flame, pulsating flame and flame extinction. It was found that the pulsating flames only existed in a very narrow range before reaching the extinction distance. The flame pulsation frequency increased monotonically with the wall temperature. For the same fuel, the frequency was independent to the distance between two walls at a fixed wall temperature and equivalence ratio. Meanwhile, the flame pulsation frequency and the range of the pulsation zone were related to the type of fuel for premixed C1-C4 alkane flames. Generally, the methane flame showed the lowest pulsation frequency and narrowest pulsation zone, while these characteristics were almost the same for C2-C4 alkane flames. © All Right Reserved.
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页码：4609 / 4614
页数：5
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