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首页> 外文期刊>Journal of visualization >Visualization of hypersonic incident shock wave boundary layer interaction
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Visualization of hypersonic incident shock wave boundary layer interaction

机译：高超声速入射冲击波边界层相互作用的可视化

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摘要

The incident shock interactions with the hypersonic laminar and forced turbulent boundary layer are visualized by the planar laser scattering technique. The effect of interaction strength on flow structures is also investigated. The results show that the boundary layer shape has been greatly altered by the incident shock. In both the laminar and turbulent inflows, the boundary layer thickness has an abrupt decrease at the interaction region. In laminar inflow, the boundary layer transition rapidly takes place due to the incident shock. The greater the incident shock angle, the bigger the boundary layer thickness downstream the incident shock. In turbulent inflow, the thickness downstream the shock is less than that of the inflow. Fractal analysis is firstly carried on hypersonic shock boundary layer interaction. The effect of the shock angle and inflow condition on fractal dimension is studied. The results indicate that with the stronger shock, the fractal dimension value is bigger for both laminar and forced turbulent inflows.
机译：通过平面激光散射技术可以看到与高超音速层流和强迫湍流边界层的入射冲击相互作用。还研究了相互作用强度对流动结构的影响。结果表明，边界层的形状已被入射冲击大大改变。在层流和湍流中，边界层厚度在相互作用区域都急剧减小。在层流中，由于入射冲击，边界层过渡迅速发生。入射冲击角越大，入射冲击下游的边界层厚度越大。在湍流中，冲击下游的厚度小于流入的厚度。首先对高超声速激波边界层相互作用进行分形分析。研究了冲击角和流入条件对分形维数的影响。结果表明，随着冲击力的增加，层流和强迫湍流的分形维数都较大。

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