| Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart | |
Tong XT(仝晓通) ; Yue LJ(岳连捷); Chen H(陈昊); Zhang QF(张启帆); He CM(何成明)
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| Corresponding Author | Yue, Lian-jie(yuelj@imech.ac.cn) |
| Source Publication | AIAA JOURNAL
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| 2023-02 | |
| Volume | 61Issue:2Pages:555-572 |
| ISSN | 0001-1452 |
| Abstract | 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. |
| DOI | 10.2514/1.J061874 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000878101800001 |
| WOS Keyword | SUPERSONIC INLET ; SHOCK ; CRITERIA ; CLASSIFICATION ; START/UNSTART ; MECHANISM ; GEOMETRY |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Aerospace |
| Funding Project | National Natural Science Foundation of China ; [U2141220] ; [11672309] ; [11902325] ; [12102440] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Yue, Lian-jie |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90634 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.{Tong Xiao-Tong, Yue Lian-jie, Zhang Qi-Fan} Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China 2.{Chen Hao, Zhang Qi-Fan, He Cheng-Ming} Chinese Acad Sci State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China 3.{Tong Xiao-Tong, Yue Lian-jie} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China |
| Recommended Citation GB/T 7714 | Tong XT,Yue LJ,Chen H,et al. Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart[J]. AIAA JOURNAL,2023,61,2,:555-572. |
| APA | 仝晓通,岳连捷,陈昊,张启帆,&何成明.(2023).Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart.AIAA JOURNAL,61(2),555-572. |
| MLA | 仝晓通,et al."Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart".AIAA JOURNAL 61.2(2023):555-572. |
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| Jp2022FA111.pdf（6058KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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