Numerical study of a fully confined supersonic slot impinging jet from bleed system | |
Huang TL(黄庭隆); Yue LJ(岳连捷); Chang XY(张新宇) | |
发表期刊 | AEROSPACE SCIENCE AND TECHNOLOGY |
2019-07-01 | |
卷号 | 90页码:12-22 |
ISSN | 1270-9638 |
摘要 | A supersonic slot jet issuing from a bleed system and impinging into a plenum is numerically investigated to deepen our understanding of the flow field and heat transfer of a fully confined impinging jet. The air of the slot jet is forced to exhaust from a plenum in unidirection, resulting in a fully confined configuration. It is of significant practical interest because of its presence in the bleed systems of a scramjet or other related applications. Three primary factors are surveyed, i.e., impingement angle, impingement distance, and back pressure at the plenum exit. The results show that the supersonic slot jet spontaneously generates a plate shock standing on the impingement wall and a strong jet shock on the right side of the jet core. On the left side, the jet shear layer can directly impinge the wall because of the pressure self-adaption effect of a recirculation region. The jet shock and jet shear layer result in two peaks of Stanton number. As the impingement angle increases, the jet shock weakens gradually and moves toward the impingement region of the shear layer until the shock disappears. And thus a single heat peak occurs in place of the previous two peaks. When the downstream flow of the plenum is choked, a wall jet pattern is exhibited because of the formation of a large scale recirculation region. The walls suffer severe aerodynamic heating as the plenum back pressure increases. In particular, the impingement wall endures the maximum thermal load at a certain back pressure at which the jet reduces to the sound speed. The plenum should be controlled to keep the back pressure below this threshold so that the slot walls Stanton number won't increase further. And the plenum should be designed as high as possible to relieve its thermal load. (C) 2019 Elsevier Masson SAS. All rights reserved. |
关键词 | Fully confined supersonic jet Inclined impingement Heat transfer Boundary layer bleed Numerical simulation |
DOI | 10.1016/j.ast.2019.04.020 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000471357200002 |
关键词[WOS] | HEAT-TRANSFER ; HYPERSONIC INLETS ; IMPINGEMENT ; SHOCK ; SEPARATION ; MACH-6 ; PLATE |
WOS研究方向 | Engineering |
WOS类目 | Engineering, Aerospace |
资助项目 | National Natural Science Foundation of China[11672309] ; National Natural Science Foundation of China[11472279] |
项目资助者 | National Natural Science Foundation of China |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | Yue, Lianjie |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/79388 |
专题 | 高温气体动力学国家重点实验室 |
推荐引用方式 GB/T 7714 | Huang TL,Yue LJ,Chang XY. Numerical study of a fully confined supersonic slot impinging jet from bleed system[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2019,90:12-22. |
APA | Huang TL,Yue LJ,&Chang XY.(2019).Numerical study of a fully confined supersonic slot impinging jet from bleed system.AEROSPACE SCIENCE AND TECHNOLOGY,90,12-22. |
MLA | Huang TL,et al."Numerical study of a fully confined supersonic slot impinging jet from bleed system".AEROSPACE SCIENCE AND TECHNOLOGY 90(2019):12-22. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Jp2019197.pdf(3918KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论