Hypergolic ignition by head-on collision of N,N,N',N'-tetramethylethylenediamine and white fuming nitric acid droplets | |
Zhang DW; Zhang P; Yuan YM(袁越明); Zhang TC(张泰昌); Zhang, P (reprint author), Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China. | |
发表期刊 | COMBUSTION AND FLAME |
2016-11-01 | |
卷号 | 173页码:276-287 |
ISSN | 0010-2180 |
摘要 | Hypergolic ignition by the head-on collision of a smaller N,N,N',N' tetramethylethylenediamine (TMEDA) droplet and a larger white fuming nitric acid (WFNA) droplet was experimentally investigated by using a droplet collision experimental apparatus equipped with a time-resolved shadowgraph, a photodetector and an infrared detector. The investigation was focused on understanding the influence of droplet collision and mixing, which vary with the collisional Weber number (We = 20-220) and the droplet size ratio (Delta = 1.2-2.9) while have a fixed Ohnesorge number (Oh = 2.5x10(-3)), on the hypergolic ignitability and the ignition delay times. The hypergolic ignition was found to critically rely on the heat release from of the liquid-phase reaction of TMEDA and nitric acid, which is subsequent to and enhanced by the effective mixing of the droplets of proper size ratios. Consequently, the ignitability regime nomogram in the We-A space shows that the hypergolic ignition favors small Delta s and large Wes; the ignition delay times tend to decrease with either decreasing Delta, or increasing We, or both. A non-monotonic variation of the ignition delay times with We was observed and attributed to the non-monotonic emergence of jet-like mixing patterns that enhance the droplet mixing and hence the liquid-phase reaction. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
关键词 | Hypergolic Ignition White Fuming Nitric Acid n Droplet Collision n Jet-like Mixing N' N'-tetramethylethylenediamine |
DOI | 10.1016/j.combustflame.2016.08.010 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000385909500026 |
关键词[WOS] | COALESCENCE ; MONOMETHYLHYDRAZINE ; DYNAMICS ; N,N,N',N'-TETRAMETHYLETHYLENEDIAMINE ; SEPARATION ; VISCOSITY ; BEHAVIOR ; DROPS |
WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering |
WOS类目 | Thermodynamics ; Energy & Fuels ; Engineering, Multidisciplinary ; Engineering, Chemical ; Engineering, Mechanical |
项目资助者 | Hong Kong RGC/GRF(PolyU 152217/14E) ; Central Research Grants of the Hong Kong Polytechnic University(G-UA2M ; G-YBGA) |
课题组名称 | LHD超声速燃烧 |
论文分区 | 一类 |
力学所作者排名 | False |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/59702 |
专题 | 高温气体动力学国家重点实验室 |
通讯作者 | Zhang, P (reprint author), Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China. |
推荐引用方式 GB/T 7714 | Zhang DW,Zhang P,Yuan YM,et al. Hypergolic ignition by head-on collision of N,N,N',N'-tetramethylethylenediamine and white fuming nitric acid droplets[J]. COMBUSTION AND FLAME,2016,173:276-287. |
APA | Zhang DW,Zhang P,Yuan YM,Zhang TC,&Zhang, P .(2016).Hypergolic ignition by head-on collision of N,N,N',N'-tetramethylethylenediamine and white fuming nitric acid droplets.COMBUSTION AND FLAME,173,276-287. |
MLA | Zhang DW,et al."Hypergolic ignition by head-on collision of N,N,N',N'-tetramethylethylenediamine and white fuming nitric acid droplets".COMBUSTION AND FLAME 173(2016):276-287. |
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