EVOLUTION OF A 2-D DISTURBANCE IN A SUPERSONIC BOUNDARY LAYER AND THE GENERATION OF SHOCKLETS

Through direct numerical simulation, the evolution of a 2-D disturbance in a supersonic boundary layer has been investigated. At a chosen location, a small amplitude T-S wave was fed into the boundary layer to investigate its evolution. Characteristics of nonlinear evolution have been found. Two met...

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Bibliographic Details
Published in:Applied mathematics and mechanics 2004, Vol.25 (1), p.1-9
Main Author: 黄章峰 周恒
Format: Article
Language:English
Subjects:
T-S波
可压缩流
数值模拟
流体力学
流体稳定性
超声波边界层
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Summary:Through direct numerical simulation, the evolution of a 2-D disturbance in a supersonic boundary layer has been investigated. At a chosen location, a small amplitude T-S wave was fed into the boundary layer to investigate its evolution. Characteristics of nonlinear evolution have been found. Two methods were applied for the detection of shocklets, and it was found that when the amplitude of the disturbance reached a certain value, shocklets would be generated, which should be taken into consideration when nonlinear theory of hydrodynamic stability for compressible flows is to be established.
ISSN:0253-4827
1573-2754
DOI:10.1007/bf02437288