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Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure | |
Ge YF(葛逸飞); Li S(李森); Wei XL(魏小林) | |
发表期刊 | FUEL |
2019 | |
卷号 | 243页码:221-229 |
摘要 | Compared to turbulent combustion in practical combustion devices, a co-flow laminar diffusion flame is the simplest configuration from which the interactions between flow field and reactions can be readily studied. High pressure combustion experiments on the methane/oxygen laminar co-flow diffusion flame are conducted to distinguish combustion states from 0.2 to 4 MPa. The transition combustion state between the steady state and periodical pulsation combustion state is studied quantitatively. The results obtained using a Schlieren device show that the different formation heights of the vortices generated in the jet flame shear layer lead to different combustion states. Based on the combustion pressure and Froude number at the burner exit, the upper and lower limits for the transition combustion state are proposed as Frcr=9.8×10−4(pr−0.012)−1.87 ± 4.0×10−5(pr+0.026)−2.48, respectively. The flame is in the steady combustion state when the flame Fr is smaller than the lower limit of Frcr. When the flame Fr is larger than the upper limit of Frcr, pulsation combustion takes place. For the pulsation combustion state, the relationship between the Strouhal number and Froude number is established as St=0.29×Fr−0.65. |
关键词 | Diffusion flame Co-flow Laminar Pulsation High pressure |
DOI | 10.1016/j.fuel.2019.01.113 |
URL | 查看原文 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/91716 |
专题 | 宽域飞行工程科学与应用中心 |
通讯作者 | Li S(李森) |
作者单位 | 中国科学院力学研究所 |
推荐引用方式 GB/T 7714 | Ge YF,Li S,Wei XL. Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure[J]. FUEL,2019,243:221-229. |
APA | Ge YF,Li S,&Wei XL.(2019).Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure.FUEL,243,221-229. |
MLA | Ge YF,et al."Combustion states distinction of the methane/oxygen laminar co-flow diffusion flame at high pressure".FUEL 243(2019):221-229. |
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