Effects of Thermal/Chemical Nonequilibrium on a High-Mach Ethylene-Fueled Scramjet
文献类型：期刊论文
| 作者 | Yao W(姚卫) ; Liu H(刘航); Zhang Z(张政); Zhang X(张旭); Yue LJ(岳连捷); Zhang XY(张晓源); Li JP(李进平); Yue LJ(岳连捷); Li JP(李进平); Yao W(姚卫)
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| 刊名 | JOURNAL OF PROPULSION AND POWER
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| 出版日期 | 2023-01-19 |
| 页码 | 18 |
| ISSN号 | 0748-4658 |
| DOI | 10.2514/1.B39007 |
| 通讯作者 | Yao, Wei(weiyao@imech.ac.cn) |
| 英文摘要 | An ethylene-fueled scramjet operating at Mach 10 was experimentally tested in the JF-24 shock tunnel and modeled using improved delayed detached eddy simulation based on up to 368.34 million cells. An in-depth analysis of the effects of thermal and chemical nonequilibrium on combustion characteristics and engine performance was conducted. The contrary effects of nonequilibrium heating and nonequilibrium cooling that occur in different sections of a scramjet were revealed. The underlying mechanism can be attributed to the delayed relaxation of thermal nonequilibrium under energy addition or deduction. The nonequilibrium case has better mixing, while the equilibrium case has higher combustion efficiency. The synchronous reductions in thrust and drag counteract each other and lead to a higher final net thrust under nonequilibrium. The net thrust increases with the global equivalence ratio, whereas the specific impulse decreases. The evolution of flamelets and reaction paths were analyzed to reveal the effect of chemical nonequilibrium, which produces an abundance of O, OH, and NO radicals through endothermic dissociation reactions and significantly alters the rate-limiting reaction paths. |
| 分类号 | 二类 |
| WOS关键词 | CONDITIONAL MOMENT CLOSURE ; LARGE-EDDY SIMULATION ; SUPERSONIC COMBUSTION ; THERMAL NONEQUILIBRIUM ; NUMERICAL-SIMULATION ; FLAME STABILIZATION ; TURBULENT ; LES ; COMPRESSION ; SHCRAMJET |
| 资助项目 | National Key Research and Development Program of China[2021YFA0719204] ; National Natural Science Foundation of China[12272387] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000918337200001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 其他责任者 | Yao, Wei |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91555]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yao W,Liu H,Zhang Z,et al. Effects of Thermal/Chemical Nonequilibrium on a High-Mach Ethylene-Fueled Scramjet[J]. JOURNAL OF PROPULSION AND POWER,2023:18. |
| APA | 姚卫.,刘航.,张政.,张旭.,岳连捷.,...&Yao W.(2023).Effects of Thermal/Chemical Nonequilibrium on a High-Mach Ethylene-Fueled Scramjet.JOURNAL OF PROPULSION AND POWER,18. |
| MLA | 姚卫,et al."Effects of Thermal/Chemical Nonequilibrium on a High-Mach Ethylene-Fueled Scramjet".JOURNAL OF PROPULSION AND POWER (2023):18. |
入库方式： OAI收割
来源：力学研究所
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