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在超声速湍流混合层风洞中,以NPLS技术为基础研究了激波与湍流的相互作用,观察到了斜激波与湍流边界层的相互作用以及湍流混合层中的大涡对斜激波的影响.所得到的NPLS实验图像不仅再现了复杂的流场结构,而且不同图像之间还具有时间相关性.在NPLS图像基础上探讨了激波与湍流相互作用的规律.
Based on the NPLS technique, the interaction between shock wave and turbulence is studied in the supersonic turbulent mixed-layer wind tunnel. The interaction between the oblique shock and the turbulent boundary layer and the effect of large eddy in the turbulent mixed layer on the oblique shock are observed The obtained NPLS images not only reproduce the complicated flow field structure, but also have the time correlation between the different images.On the basis of NPLS images, the interaction between shock and turbulence is discussed.