Numerical investigation on the thermal protection mechanism for blunt body with forward-facing cavity
文献类型：期刊论文
| 作者 | Li, XD ; Hu ZM(胡宗民); Jiang ZL(姜宗林)
|
| 刊名 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| 出版日期 | 2016 |
| 卷号 | 59期号:7页码:1120-1129 |
| 通讯作者邮箱 | huzm@imech.ac.cn |
| ISSN号 | 1674-7321 |
| 关键词 | hypersonic flow aerodynamic heating thermal protection system forward-facing cavity |
| 通讯作者 | Hu, ZM (reprint author), Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China. |
| 产权排序 | [Li XinDong; Hu ZongMin; Jiang ZongLin] Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China |
| 中文摘要 | Numerical experiments are carried out using the standard hypersonic ballistic-type model (HB-2) to investigate the effect of forward-facing cavity on the aerodynamic heating. A general concept is proposed which utilizes the flow disturbances generated passively in the nosed subsonic region to weaken the detached shock wave. Several aspects are mainly studied, including shock shape and standoff distance, surface heat flux and pressure, flowfield feature and cooling mechanism. The numerical results indicate that shock strength and standoff distance increase with an increase in the L/D ratio of the cavity. Interestingly, a bulge structure of the detached shock associated with a deep cavity is observed for the first time. Local surface heat flux and pressure around the concave nose are much lower respectively than those at the stagnation point of the baseline model. In addition, both surface heat and pressure reductions are proportional to the L/D ratio. A negative heating phenomenon may occur in the vicinity of a sharp lip or on the base wall of a deep cavity. If the L/D ratio exceeds 0.7, the detached shock appears as a self-sustained oscillation which can be referred to as the cooling mechanism. |
| 类目[WOS] | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
| 分类号 | 二类 |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | hypersonic flow ; aerodynamic heating ; thermal protection system ; forward-facing cavity |
| 收录类别 | SCI ; EI ; CSCD |
| 原文出处 | http://dx.doi.org/10.1007/s11431-016-6015-4 |
| 语种 | 英语 |
| WOS记录号 | WOS:000379042600016 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59579]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, XD,Hu ZM,Jiang ZL. Numerical investigation on the thermal protection mechanism for blunt body with forward-facing cavity[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2016,59(7):1120-1129. |
| APA | Li, XD,胡宗民,&姜宗林.(2016).Numerical investigation on the thermal protection mechanism for blunt body with forward-facing cavity.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,59(7),1120-1129. |
| MLA | Li, XD,et al."Numerical investigation on the thermal protection mechanism for blunt body with forward-facing cavity".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 59.7(2016):1120-1129. |
入库方式： OAI收割
来源：力学研究所
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