Thermochemical non-equilibrium flow characteristics of high Mach number inlet in a wide operation range

doi:10.1016/j.cja.2023.07.033

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

	Thermochemical non-equilibrium flow characteristics of high Mach number inlet in a wide operation range
	Dai, Chunliang; Sun, Bo; Yue LJ(岳连捷); Zhou, Shengbing; Zhuo, Changfei; Zhou, Changsheng; Yu, Jianyi
刊名	CHINESE JOURNAL OF AERONAUTICS
	2023-12-01
卷号	36 期号:12 页码:164-184
关键词	Scramjet inlet Starting ability Thermochemical Work performance
ISSN号	1000-9361
DOI	10.1016/j.cja.2023.07.033
通讯作者	Sun, Bo(hypersun@126.com)
英文摘要	The high-temperature non-equilibrium effect is a novel and significant issue in the flows over a high Mach number (above Mach 8) air-breathing vehicle. Thus, this study attempts to inves-tigate the high-temperature non-equilibrium flows of a curved compression two-dimensional scram -jet inlet at Mach 8 to 12 utilizing the two-dimensional non-equilibrium RANS calculations. Notably, the thermochemical non-equilibrium gas model can predict the actual high-temperature flows, and the numerical results of the other four thermochemical gas models are only used for com-parative analysis. Firstly, the thermochemical non-equilibrium flow fields and work performance of the inlet at Mach 8 to 12 are analyzed. Then, the influences of high-temperature non-equilibrium effects on the starting characteristics of the inlet are investigated. The results reveal that a large sep-aration bubble caused by the cowl shock/lower wall boundary layer interaction appears upstream of the shoulder, at Mach 8. The separation zone size is smaller, and its location is closer to the down-stream area while the thermal process changes from frozen to non-equilibrium and then to equilib-rium. With the increase of inflow Mach number, the thermochemical non-equilibrium effects in the whole inlet flow field gradually strengthen, so their influences on the overall work performance of the high Mach number inlet are more obvious. The vibrational relaxation or thermal non -equilibrium effects can yield more visible influences on the inlet performance than the chemical non-equilibrium reactions. The inlet in the thermochemical non-equilibrium flow can restart more easily than that in the thermochemical frozen flow. This work should provide a basis for the design and starting ability prediction of the high Mach number inlet in the wide operation range. (c) 2023 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
分类号	一类
资助项目	China Scholarship Council[202206840048] ; Training Fund for Excellent Doctoral Candidates of Nanjing University of Science and Technology, China ; Opening Foundation of State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, China[2021KF07] ; National Key Laboratory Fund, China[2022-JCJQ-LB-020-01] ; Foundation of Key Laboratory of Hypersonic Aerodynamic Force and Heat Technology, AVIC Aerodynamics Research Institute, China[XFX20220104] ; China Postdoctoral Science Foundation[BX20200070] ; Fundamental Research Foundation of the Central Universities, China[2022CDJXY- 012]
WOS关键词	TURBULENCE MODELS ; SCRAMJET ; COMPRESSION ; DESIGN ; ISOLATOR
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:001135521500001
资助机构	China Scholarship Council ; Training Fund for Excellent Doctoral Candidates of Nanjing University of Science and Technology, China ; Opening Foundation of State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, China ; National Key Laboratory Fund, China ; Foundation of Key Laboratory of Hypersonic Aerodynamic Force and Heat Technology, AVIC Aerodynamics Research Institute, China ; China Postdoctoral Science Foundation ; Fundamental Research Foundation of the Central Universities, China
其他责任者	Sun, Bo
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94088]
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	Dai, Chunliang,Sun, Bo,Yue LJ,et al. Thermochemical non-equilibrium flow characteristics of high Mach number inlet in a wide operation range[J]. CHINESE JOURNAL OF AERONAUTICS,2023,36(12):164-184.
APA	Dai, Chunliang.,Sun, Bo.,岳连捷.,Zhou, Shengbing.,Zhuo, Changfei.,...&Yu, Jianyi.(2023).Thermochemical non-equilibrium flow characteristics of high Mach number inlet in a wide operation range.CHINESE JOURNAL OF AERONAUTICS,36(12),164-184.
MLA	Dai, Chunliang,et al."Thermochemical non-equilibrium flow characteristics of high Mach number inlet in a wide operation range".CHINESE JOURNAL OF AERONAUTICS 36.12(2023):164-184.