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Numerical investigation of oblique detonation waves on a truncated cone in hydrogen-air mixtures

文献类型：期刊论文

作者Zhou, Lin3,4; Tu, Shengjia3; Zhang, Yining3; Yang, Pengfei2; Teng, Honghui1,4; Yang PF(杨鹏飞)
刊名PHYSICS OF FLUIDS
出版日期2023-11-01
卷号35期号:11页码:15
ISSN号1070-6631
DOI10.1063/5.0173603
通讯作者Zhang, Yining(13718931527@163.com) ; Yang, Pengfei(young1505@foxmail.com)
英文摘要Traditional methods of initiating oblique detonation waves (ODWs) using wedges and cones face a fundamental challenge in reconciling the need for rapid initiation with stable combustion, especially at low flight Mach numbers (Ma < 8). This study introduces an innovative initiation configuration involving a truncated cone. By utilizing Euler equations coupled with detailed hydrogen-air chemical reaction models, the wave dynamics induced by the truncated cone configuration are systematically explored. The findings reveal that the truncated cone configuration enables more rapid initiation of ODWs compared to conventional cones, while also preserving improved stability when contrasted with wedge. This behavior can be attributed to the planar flow characteristics in the post-shock field of truncated cone, generated by the upstream wedge-shaped shock, and the Taylor-Maccoll flow characteristics, caused by the downstream conical shock. Furthermore, the study delves into the initiation and morphological changes with respect to the inner radius and angle of the truncated cone. As inner radii or truncated cone angle increase, three initiation wave systems emerge: stable, oscillatory, and detached modes. Analysis of the dynamic variations in pressure and velocity within the induction zone highlights that the upstream oscillation originates from the flow velocity in the induction zone falling below the local Chapman-Jouguet velocity of normal detonation wave (NDW). However, the upstream region of the truncated cone exhibits more pronounced expansion effects, leading to momentum loss, and subsequently, the weakening and even vanishing of the NDW. This prompts the downstream oscillation of the initiation structure, instigating a cyclic oscillation pattern.
WOS关键词ZONE STRUCTURE ; PERFORMANCE ; COMBUSTION ; INITIATION ; WEDGE
资助项目This research was supported by the National Natural Science Foundation of China (Nos. 12202014 and 12325206).[12202014] ; This research was supported by the National Natural Science Foundation of China (Nos. 12202014 and 12325206).[12325206] ; National Natural Science Foundation of China
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001106202000006
资助机构This research was supported by the National Natural Science Foundation of China (Nos. 12202014 and 12325206). ; National Natural Science Foundation of China
源URL[http://dspace.imech.ac.cn/handle/311007/93785]  
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Zhang, Yining; Yang, Pengfei
作者单位1.Beijing Inst Technol, Chongqing Innovat Ctr, Chongqing 401120, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
3.Beijing Power Machinery Inst, Beijing 100074, Peoples R China
4.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Lin,Tu, Shengjia,Zhang, Yining,et al. Numerical investigation of oblique detonation waves on a truncated cone in hydrogen-air mixtures[J]. PHYSICS OF FLUIDS,2023,35(11):15.
APA Zhou, Lin,Tu, Shengjia,Zhang, Yining,Yang, Pengfei,Teng, Honghui,&杨鹏飞.(2023).Numerical investigation of oblique detonation waves on a truncated cone in hydrogen-air mixtures.PHYSICS OF FLUIDS,35(11),15.
MLA Zhou, Lin,et al."Numerical investigation of oblique detonation waves on a truncated cone in hydrogen-air mixtures".PHYSICS OF FLUIDS 35.11(2023):15.

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来源：力学研究所

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