Hypersonic boundary layer theory in the symmetry plane of blunt bodies

doi:10.1017/jfm.2024.708

	Hypersonic boundary layer theory in the symmetry plane of blunt bodies
	Wang Q(汪球)1 ; Li JP(李进平)1 ; Gu, Sangdi 2
通讯作者	Li, Jinping([email protected])
发表期刊	JOURNAL OF FLUID MECHANICS
	2024-10-10
卷号	997 页码:35
ISSN	0022-1120
摘要	Solving the three-dimensional boundary layer equations carries theoretical significance and practical applications, which also poses substantial challenges due to its inherent complexity. In this paper, the laminar boundary layer equations for the symmetry plane of three-dimensional bodies are derived in an orthogonal curvilinear coordinate system associated with the principal curvatures. The derivation of the boundary layer equations is based not only on the common symmetric properties of the flow, as given by Hirschel et al. (Three-Dimensional Attached Viscous Flow, 2014, Academic Press, pp. 183-187), but also incorporates the geometric symmetry properties of the body. The derived equations are more representative and simplified. Notably, these equations can degenerate to a form consistent with or equivalent to the commonly used boundary layer equations for special bodies such as flat plates, cones and spheres. Furthermore, for hypersonic flows, the crossflow velocity gradient at the boundary layer edge on the symmetry plane is derived based on Newtonian theory. Subsequently, this parameter can provide the necessary boundary condition needed for solving the boundary layer equations using existing methods. Finally, as examples, the equations developed in this paper are solved using the difference-differential method for several typical three-dimensional blunt shapes that appeared on hypersonic vehicles. They prove to be useful in the analysis and interpretation of boundary layer flow characteristics in the symmetry plane of blunt bodies.
关键词	compressible boundary layers hypersonic flow
DOI	10.1017/jfm.2024.708
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001329499400001
关键词[WOS]	HEAT-TRANSFER ; CONE ; FLOW
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	Key-Area Research and Development Program of Guangdong Province[2021B0909060004] ; National Natural Science Foundation of China[12072352] ; National Natural Science Foundation of China[12232018] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 0620203] ; Youth Innovation Promotion Association CAS[2021020]
项目资助者	Key-Area Research and Development Program of Guangdong Province ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Li, Jinping
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/96970
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Hong Kong Polytech Univ, Dept Aeronaut & Aviat Engn, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wang Q,Li JP,Gu, Sangdi. Hypersonic boundary layer theory in the symmetry plane of blunt bodies[J]. JOURNAL OF FLUID MECHANICS,2024,997:35.Rp_Au:Li, Jinping
APA	汪球,李进平,&Gu, Sangdi.(2024).Hypersonic boundary layer theory in the symmetry plane of blunt bodies.JOURNAL OF FLUID MECHANICS,997,35.
MLA	汪球,et al."Hypersonic boundary layer theory in the symmetry plane of blunt bodies".JOURNAL OF FLUID MECHANICS 997(2024):35.