Direct numerical simulation of slender cones with variable nose bluntness based on graphics processing unit computation

doi:10.1063/5.0154592

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

	Direct numerical simulation of slender cones with variable nose bluntness based on graphics processing unit computation
	Zhu YH(朱艳华); Li XL(李新亮); Guo TB(郭同彪); Liu HW(刘洪伟); Tong FL(童福林)
刊名	PHYSICS OF FLUIDS
	2023-07-01
卷号	35 期号:7 页码:74112
ISSN号	1070-6631
DOI	10.1063/5.0154592
英文摘要	Direct numerical simulation with up to 10 x 10(9) scale grid points based on graphics processing unit computation is carried out to investigate the bluntness effect on the hypersonic boundary-layer transition over a slender cone with zero angle of attack at Mach 6. Four cases with the nose radii of 1, 10, 20, and 40mm are conducted, and the corresponding Reynolds number based on the nose radius varies from 1.0 x 10(4) to 4.0 x 10(5). Random disturbances with a broad spectrum of frequencies and a wide range of azimuthal wavenumbers were applied to the wall to simulate disturbances caused by wall roughness. The numerical results show that as the nose tip radius increases, the transition position gradually moves downstream with increased transition region. For the case with a nose radius of 1 mm, the flow transition and entropy swallowing occur almost simultaneously, while for other cases, the transition takes place earlier than the entropy swallowing. In consequence, the disturbance amplitude upstream of the transition in the 1mm case is much larger than that of other cases. To further study the mechanism of the transition, the frequency spectrum analysis is carried out. It is found that all cases exhibit two characteristic frequencies within the transition region, i.e., the high frequency and extremely low frequency. Owing to the influence of the entropy layer, the characteristic high frequency of the 1mm case is significantly higher than that of other cases. With the increase in the nose radius, the characteristic frequency of the high frequency decreases gradually. Published under an exclusive license by AIP Publishing.
分类号	一类/力学重要期刊
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001060308700004
资助机构	National Key Research and Development Program of China [2019YFA0405300] ; National Natural Science Foundation of China [12232018, 12072349, 12202457]
其他责任者	Liu, HW (corresponding author), Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92664]
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.{Tong Fulin} China Aerodynam Res & Dev Ctr Computat Aerodynam Inst Mianyang 621000 Sichuan Peoples R China 2.{Zhu Yanhua, Li Xinliang} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 3.{Zhu Yanhua, Li Xinliang, Guo Tongbiao, Liu Hongwei} Chinese Acad Sci Inst Mech LHD Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Zhu YH,Li XL,Guo TB,et al. Direct numerical simulation of slender cones with variable nose bluntness based on graphics processing unit computation[J]. PHYSICS OF FLUIDS,2023,35(7):74112.
APA	朱艳华,李新亮,郭同彪,刘洪伟,&童福林.(2023).Direct numerical simulation of slender cones with variable nose bluntness based on graphics processing unit computation.PHYSICS OF FLUIDS,35(7),74112.
MLA	朱艳华,et al."Direct numerical simulation of slender cones with variable nose bluntness based on graphics processing unit computation".PHYSICS OF FLUIDS 35.7(2023):74112.