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Title:
Direct Numerical Simulation Of Hypersonic Boundary-Layer Transition Over A Blunt Cone
Author: Li XL(李新亮); Fu DX(傅德薰); Ma YW(马延文)
Source: AIAA Journal
Issued Date: 2008
Pages: 2899-2913
Abstract: Direct numerical simulation of transition How over a blunt cone with a freestream Mach number of 6, Reynolds number of 10,000 based on the nose radius, and a 1-deg angle of attack is performed by using a seventh-order weighted essentially nonoscillatory scheme for the convection terms of the Navier-Stokes equations, together with an eighth-order central finite difference scheme for the viscous terms. The wall blow-and-suction perturbations, including random perturbation and multifrequency perturbation, are used to trigger the transition. The maximum amplitude of the wall-normal velocity disturbance is set to 1% of the freestream velocity. The obtained transition locations on the cone surface agree well with each other far both cases. Transition onset is located at about 500 times the nose radius in the leeward section and 750 times the nose radius in the windward section. The frequency spectrum of velocity and pressure fluctuations at different streamwise locations are analyzed and compared with the linear stability theory. The second-mode disturbance wave is deemed to be the dominating disturbance because the growth rate of the second mode is much higher than the first mode. The reason why transition in the leeward section occurs earlier than that in the windward section is analyzed. It is not because of higher local growth rate of disturbance waves in the leeward section, but because the growth start location of the dominating second-mode wave in the leeward section is much earlier than that in the windward section.
Keyword: Hyperbolic Conservation-Laws
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Li, XL (reprint author), Chinese Acad Sci, Inst Mech, Lab Nonlinear Mech, Beijing 100080, Peoples R China.
Correspondent Email: lixl@lnm.imech.ac.cn
DOI: 10.2514/1.37305
DOC Type: Article
WOS Subject: Engineering, Aerospace
WOS Subject Extended: Engineering
WOS Keyword Plus: HYPERBOLIC CONSERVATION-LAWS ; FLAT-PLATE ; TURBULENT SPOTS ; WENO SCHEME ; RECEPTIVITY ; WAVES ; FLOW ; DISTURBANCES ; STABILITY
WOS ID: WOS:000260817900024
ISSN: 0001-1452
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/25846
Appears in Collections:力学所知识产出(1956-2008)_期刊论文

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Recommended Citation:
Li XL,Fu DX,Ma YW. Direct Numerical Simulation Of Hypersonic Boundary-Layer Transition Over A Blunt Cone[J]. AIAA Journal,2008-01-01:2899-2913.
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