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Mechanism of transition in a hypersonic sharp cone boundary layer with zero angle of attack

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Abstract

Firstly, the steady laminar flow field of a hypersonic sharp cone boundary layer with zero angle of attack was computed. Then, two groups of finite amplitude T-S wave disturbances were introduced at the entrance of the computational field, and the spatial mode transition process was studied by direct numerical simulation (DNS) method. The mechanism of the transition process was analyzed. It was found that the change of the stability characteristics of the mean flow profile was the key issue. Furthermore, the characteristics of evolution for the disturbances of different modes in the hypersonic sharp cone boundary layer were discussed.

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Correspondence to Luo Ji-sheng  (罗纪生).

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Contributed by LUO Ji-sheng

Project supported by the National Natural Science Foundation of China (Key Program) (No. 10632050)

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Dong, M., Luo, Js. Mechanism of transition in a hypersonic sharp cone boundary layer with zero angle of attack. Appl Math Mech 28, 1019–1028 (2007). https://doi.org/10.1007/s10483-007-0804-2

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  • DOI: https://doi.org/10.1007/s10483-007-0804-2

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Chinese Library Classification

2000 Mathematics Subject Classification

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