Mechanism of Transition in a Hypersonic Sharp Cone Boundary Layer With Zero Angle of Attack

DONG Ming; LUO Ji-sheng

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DONG Ming, LUO Ji-sheng. Mechanism of Transition in a Hypersonic Sharp Cone Boundary Layer With Zero Angle of Attack[J]. Applied Mathematics and Mechanics, 2007, 28(8): 912-920.

Citation:

DONG Ming, LUO Ji-sheng. Mechanism of Transition in a Hypersonic Sharp Cone Boundary Layer With Zero Angle of Attack[J]. Applied Mathematics and Mechanics, 2007, 28(8): 912-920.

Citation:

DONG Ming, LUO Ji-sheng. Mechanism of Transition in a Hypersonic Sharp Cone Boundary Layer With Zero Angle of Attack[J]. Applied Mathematics and Mechanics, 2007, 28(8): 912-920.

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Mechanism of Transition in a Hypersonic Sharp Cone Boundary Layer With Zero Angle of Attack

Department of Mechanics, Tianjin University, Tianjin 300072, P. R. China

Received Date: 2007-05-10
Rev Recd Date: 2007-06-21
Publish Date: 2007-08-15

Abstract

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).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.Moreover,the characteristics of evolution for the disturbances of different modes in the hypersonic sharp cone boundary layer was discussed.
- zero angle of attack,
- sharp cone boundary layer,
- transition,
- stability

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References(7)

References

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