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

doi:10.1063/5.0173603

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Numerical investigation of oblique detonation waves on a truncated cone in hydrogen-air mixtures
	Zhou, Lin 3,4; Tu, Shengjia 3; Zhang, Yining 3; Yang PF(杨鹏飞)2; Teng, Honghui 1,4
刊名	PHYSICS OF FLUIDS
	2023-11-01
卷号	35 期号:11 页码:15
ISSN号	1070-6631
DOI	10.1063/5.0173603
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.
分类号	一类/力学重要期刊
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关键词	ZONE STRUCTURE ; PERFORMANCE ; COMBUSTION ; INITIATION ; WEDGE
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
其他责任者	Zhang, Yining ; Yang, Pengfei
内容类型	期刊论文
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
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,杨鹏飞,&Teng, Honghui.(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.