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Quasi-steady shock refraction phenomenon at a diffusive fast-slow interface

文献类型：期刊论文

作者Pu, Jingqian1; Guan, Ben2; Deng, Zhiwei2; Zhai, Zhigang1; Luo, Xisheng1,3
刊名JOURNAL OF FLUID MECHANICS
出版日期2025-05-09
卷号1010页码:23
关键词shock waves
ISSN号0022-1120
DOI10.1017/jfm.2025.282
通讯作者Zhai, Zhigang(sanjing@ustc.edu.cn)
英文摘要The quasi-steady shock refraction at a diffusive air-SF $_6$ interface (fast-slow type) is investigated numerically and theoretically. A new refraction pattern where both shock and expansion waves are simultaneously present in the reflected waves (named RRR-E) is first observed at the diffusive interface. The new refraction pattern is a regular pattern that is not expected to occur in classical shock refraction at a sharp fast-slow interface. Through the shock polar method, continuous refraction processes occur within the diffusion layer to satisfy the kinematic relationship between the reflected wave and the transmitted shock, which results in the RRR-E formation. Subsequently, the conditions for the RRR-E occurrence are obtained theoretically and verified numerically. In the phase diagram of the refraction patterns, the presence of RRR-E results in the transition boundaries of different refraction patterns at the sharp fast-slow interface no longer being valid. Specifically, the appearance of RRR-E delays the Mach reflection refraction (MRR) process, which is of great significance for the design of scramjet engines.
WOS关键词TIME CONSERVATION ELEMENT ; PLANE SHOCK ; WAVE IMPINGEMENT ; REFLECTION ; TRANSITION ; PATTERNS ; FLOW
资助项目National Natural Science Foundation of China[12388101] ; National Natural Science Foundation of China[12372281] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620201] ; Youth Innovation Promotion Association CAS
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001485529400001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS
源URL[http://dspace.imech.ac.cn/handle/311007/101543]  
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Zhai, Zhigang
作者单位1.Univ Sci & Technol China, Dept Modern Mech, Adv Prop Lab, Hefei 230026, Peoples R China
2.Harbin Engn Univ, Coll Aerosp & Civil Engn, Harbin 150001, Heilongjiang, 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		 Pu, Jingqian,Guan, Ben,Deng, Zhiwei,et al. Quasi-steady shock refraction phenomenon at a diffusive fast-slow interface[J]. JOURNAL OF FLUID MECHANICS,2025,1010:23.
APA Pu, Jingqian,Guan, Ben,Deng, Zhiwei,Zhai, Zhigang,&Luo, Xisheng.(2025).Quasi-steady shock refraction phenomenon at a diffusive fast-slow interface.JOURNAL OF FLUID MECHANICS,1010,23.
MLA Pu, Jingqian,et al."Quasi-steady shock refraction phenomenon at a diffusive fast-slow interface".JOURNAL OF FLUID MECHANICS 1010(2025):23.

入库方式： OAI收割

来源：力学研究所

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