Experimental investigation of combustion-induced starting hysteresis in the scramjet | |
Zhang QF(张启帆); Chen H(陈昊); Wu ZJ(吴振杰); Gao ZB(高占彪); Luo WH(罗苇航); Gu HB(顾洪斌); Yue LJ(岳连捷) | |
刊名 | PHYSICS OF FLUIDS |
2022-09 | |
卷号 | 34页码:96103 |
ISSN号 | 1070-6631 |
DOI | 10.1063/5.0103204 |
英文摘要 | Understanding the hypersonic inlet starting characteristics is the prerequisite for avoiding the abnormal unstart state. To make the work close to the actual situation, an experimental study was performed on a scramjet model at a simulated freestream Mach number of 6.0 with pressure and thrust measurements. The inlet working status is determined by the heat release of the injected ethylene with reciprocating variations. The results show that the critical equivalence ratio of the restart state is lower than that of the unstart state, which means that the combustion weakens the inlet restart capability and raises the unstart/restart hysteresis phenomena. Specifically, two 11el unstart/restart hysteresis phenomena are found: one may come from the dual-solution characteristics of the shock-combustion interaction and the other may come from the historical effect of reverse flow. Compared to the former type, the latter type requires greater downstream heat release and generates a larger hysteresis loop. In addition, the engine thrust characteristics of the whole unstart and restart processes are analyzed. The thrust increment in the shock-combustion interaction type exhibits nearly linearly. However, the thrust increment meets abrupt changes and strong oscillations in the reverse flow type, accompanied by the reverse flow's formation and disappearance, making the engine more difficult to restart. Published under an exclusive license by AIP Publishing. |
学科主题 | Mechanics ; Physics, Fluids & Plasmas |
分类号 | 一类/力学重要期刊 |
语种 | 英语 |
WOS记录号 | WOS:000859325200002 |
资助机构 | National Natural Science Foundation of China [U2141220, 11902325, 12102440] |
其他责任者 | Chen, H |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/90213] |
专题 | 力学研究所_高温气体动力学国家重点实验室 |
作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang QF,Chen H,Wu ZJ,et al. Experimental investigation of combustion-induced starting hysteresis in the scramjet[J]. PHYSICS OF FLUIDS,2022,34:96103. |
APA | Zhang QF.,Chen H.,Wu ZJ.,Gao ZB.,Luo WH.,...&Yue LJ.(2022).Experimental investigation of combustion-induced starting hysteresis in the scramjet.PHYSICS OF FLUIDS,34,96103. |
MLA | Zhang QF,et al."Experimental investigation of combustion-induced starting hysteresis in the scramjet".PHYSICS OF FLUIDS 34(2022):96103. |
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