Deflagration-to-detonation transition and detonation propagation characteristics in a millimetre-scale spiral channel
文献类型：期刊论文
| 作者 | Huo, Jiepeng1,4,5,6; Su, Hang7; Li, Tao4,5,6; Yang, Zixin2,4,5,6; Li, Xing3,4,5,6; Wang, Xiaohan4,5,6 |
| 刊名 | EXPERIMENTAL THERMAL AND FLUID SCIENCE
 |
| 出版日期 | 2022 |
| 卷号 | 140页码:13 |
| 关键词 | DDT Excess Enthalpy Detonation Spiral Channel Micro-scale combustion |
| ISSN号 | 0894-1777 |
| DOI | 10.1016/j.expthermflusci.2022.110773 |
| 通讯作者 | Wang, Xiaohan(wangxh@ms.giec.ac.cn) |
| 英文摘要 | The flame propagation processes involving deflagration-to-detonation transition (DDT) and detonation propagation in a novel millimetre-scale spiral channel (MSDC) are studied experimentally. The channel is of 3.0 mm in width and 5.2 m in length, embedded in a stainless-steel plate. In particular, a tiny gap of 0.02-mm width is reserved between the upper cover plate and the channel. Stoichiometric propane/hydrogen/air mixtures were adopted as the reactant. The combustion modes are investigated with various initial pressure (P0) and hydrogen blend ratio (XH), ranging from 100 to 500 kPa and 0.6 to 1.0, respectively. For lower P0 and XH, the flame gradually develops into an isobaric flame owing to significant thermal losses in narrow channels. With the in-crease of P0 and XH, the excess-enthalpy effect plays an important role, and a quantity of high-temperature burned gas in the inner turn enter the outer turn through the gap resulting in a spontaneous flame ahead of the wave front. It promotes the flame acceleration and the onset of local explosion. In subsequent detonation propagation process after DDT, multiple flame combination between the detonation wave and the secondary flame arise and the displacement speed of leading front dramatically increases, even more than 3 DCJ. Furthermore, benefited from excess enthalpy effect and the compact structure of MSDC, the displacement be-tween the DDT location and the ignition spark is of the order of as small as 10 mm. It is of a great potential in application to miniature detonation engines, in which rapid DDT in narrow channels is of strong demand. |
| WOS关键词 | FLAME ACCELERATION ; STOICHIOMETRIC ETHYLENE/OXYGEN ; MICRO ; INITIATION ; MECHANISMS ; MODES |
| 资助项目 | National Natural Science Foundation of China[52206184] ; National Natural Science Foundation of China[51976219] ; DNL Cooperation Fund, CAS[DNL202006] ; ransformational Technologies for Clean Energy and Demonstration ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21060102] |
| WOS研究方向 | Thermodynamics ; Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000870696600003 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National Natural Science Foundation of China ; DNL Cooperation Fund, CAS ; ransformational Technologies for Clean Energy and Demonstration ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.giec.ac.cn/handle/344007/37630]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wang, Xiaohan |
| 作者单位 | 1.Guangdong Foran Technol Co Ltd, Foshan 528000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 6.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 7.Shanghai Inst Space Prop, Shanghai 201112, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huo, Jiepeng,Su, Hang,Li, Tao,et al. Deflagration-to-detonation transition and detonation propagation characteristics in a millimetre-scale spiral channel[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2022,140:13. |
| APA | Huo, Jiepeng,Su, Hang,Li, Tao,Yang, Zixin,Li, Xing,&Wang, Xiaohan.(2022).Deflagration-to-detonation transition and detonation propagation characteristics in a millimetre-scale spiral channel.EXPERIMENTAL THERMAL AND FLUID SCIENCE,140,13. |
| MLA | Huo, Jiepeng,et al."Deflagration-to-detonation transition and detonation propagation characteristics in a millimetre-scale spiral channel".EXPERIMENTAL THERMAL AND FLUID SCIENCE 140(2022):13. |
入库方式： OAI收割
来源：广州能源研究所
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