Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart
文献类型：期刊论文
| 作者 | Tong, Xiao-Tong1,3 ; Yue, Lian-jie1,3; Chen, Hao2; Zhang, Qi-Fan2,3; He, Cheng-Ming2; Yue LJ(岳连捷); Tong XT(仝晓通); Zhang QF(张启帆); Chen H(陈昊)
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| 刊名 | AIAA JOURNAL
 |
| 出版日期 | 2022-10-28 |
| 页码 | 18 |
| ISSN号 | 0001-1452 |
| DOI | 10.2514/1.J061874 |
| 通讯作者 | Yue, Lian-jie(yuelj@imech.ac.cn) |
| 英文摘要 | The prediction of unstart boundaries of hypersonic inlets is significant to the engine control. To correct the previous conclusions based on the one-dimensional and inviscid flow assumption, the present paper numerically investigates the unstart characteristics of two-dimensional contraction ducts in viscous flow that vary with multiple controlling variables. Based on the newly defined dimensionless cowl length and effective internal contraction ratio, the similarity law of unstart is discovered. The universal empirical equation of unstart boundary for different cowl lengths, cowl lip heights, entrance boundary-layer thicknesses, unit Reynolds numbers, and Mach numbers is proposed, which can simplify the design of two-dimensional hypersonic inlets. With varying the dimensionless cowl length, three different types of short-cowl, transitional, and long-cowl unstarts are identified, owing to the different evolution mechanisms of separation region. The unstart displays a separation region growing under the streamwise pressure difference enhanced by the shock system or flow choke. In addition, the wall pressure criteria for unstart are correlated to the characteristic separation scale at unstart critical state and the dimensionless cowl length, which facilitates the unstart detection or early warning. It is observed that the Kantrowitz limit is close to the unstart boundaries for very short cowl and the isentropic limit is close to the unstart boundaries for very long cowl. |
| WOS关键词 | SUPERSONIC INLET ; SHOCK ; CRITERIA ; CLASSIFICATION ; START/UNSTART ; MECHANISM ; GEOMETRY |
| 资助项目 | National Natural Science Foundation of China ; [U2141220] ; [11672309] ; [11902325] ; [12102440] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000878101800001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90633]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Yue, Lian-jie |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 3.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 | Tong, Xiao-Tong,Yue, Lian-jie,Chen, Hao,et al. Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart[J]. AIAA JOURNAL,2022:18. |
| APA | Tong, Xiao-Tong.,Yue, Lian-jie.,Chen, Hao.,Zhang, Qi-Fan.,He, Cheng-Ming.,...&陈昊.(2022).Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart.AIAA JOURNAL,18. |
| MLA | Tong, Xiao-Tong,et al."Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart".AIAA JOURNAL (2022):18. |
入库方式： OAI收割
来源：力学研究所
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