Simple shape model for normal shock trains in straight channels
文献类型：期刊论文
| 作者 | Yu FY(于方游)2,3; Huang, Tinglong1; Chen H(陈昊)3 ; Zhang QF(张启帆)3; Yue LJ(岳连捷)2,3
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| 刊名 | THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 39期号:1页码:16 |
| 关键词 | Shock train Mathematical model Shock reflection Isolator Ramjet engine |
| ISSN号 | 0935-4964 |
| DOI | 10.1007/s00162-025-00736-2 |
| 通讯作者 | Chen, Hao(chenhao@imech.ac.cn) ; Yue, Lianjie(yuelj@imech.ac.cn) |
| 英文摘要 | Normal shock trains are a flow phenomenon of significance to ramjet engines, but it remains unclear what its structure is decided by and how it evolves with the incoming Mach number. To seek a theoretical explanation, the minimum entropy production principle is generalized to the quasi-steady behavior of normal shock trains in two-dimensional straight channels with uniform incoming flow. Numerical simulations are also performed to validate the model together with the data collected from public literature. The analysis suggests that the flow parameters of a normal shock train depend on the inviscid shock-shock interactions rather than the local boundary-layer separations, though the angles of two incident shocks should still be equal as similar to the case that complies with the free-interaction theory. The shock feet's positions, meanwhile, are allowed to be coincident or not, free from the entropy restriction. This freedom of position explains why both symmetric and partially asymmetric normal shock trains could be found previously. Further theoretical calculations reveal the inclinations of two incident shocks increase first and then decrease with the incoming Mach number, peaking at 48.570 degrees when the Mach number reaches 1.753. It is also indicated that the Mach number range allowing for a normal shock train is 1.652 to 2.254, giving evidence for past observations. |
| 分类号 | 二类 |
| WOS关键词 | BOUNDARY-LAYER INTERACTIONS ; MINIMUM ENTROPY PRODUCTION ; MACH REFLECTION ; TRANSITION PREDICTION ; WAVE REFLECTIONS ; STEADY ; SEPARATION ; PRINCIPLE ; INLET ; FLOW |
| 资助项目 | National Natural Science Foundation of China ; [12102440] ; [U2341240] ; [U2141220] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001395646400001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Chen, Hao ; Yue, Lianjie |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98107]  |
| 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.Beijing Syst Design Inst Mech Elect Engn, Beijing 100871, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yu FY,Huang, Tinglong,Chen H,et al. Simple shape model for normal shock trains in straight channels[J]. THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS,2025,39(1):16. |
| APA | 于方游,Huang, Tinglong,陈昊,张启帆,&岳连捷.(2025).Simple shape model for normal shock trains in straight channels.THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS,39(1),16. |
| MLA | 于方游,et al."Simple shape model for normal shock trains in straight channels".THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS 39.1(2025):16. |
入库方式： OAI收割
来源：力学研究所
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