Abstract The flow visualization of a shock wave/boundary layer interaction (SWBLI) has been performed using polarization imaging. This technique used the degree of linear polarization (DOLP) for flow visualization instead of the intensity information which is used in traditional imaging methods. The experimental results show that the instantaneous structures of SWBLI captured by the polarization imaging are the same as when the intensity information is used, verifying the feasibility of polarization imaging. The image fusion of the DOLP results and the intensity information will further improve the flow visualization effect. Through statistical analysis, it can be shown that polarization imaging would weaken the influence of incident light on imaging, when the intensity of the incident light is not uniform or fluctuates with time. Graphic abstract

中文翻译：

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使用偏振成像可视化冲击波/边界层相互作用

摘要 冲击波/边界层相互作用 (SWBLI) 的流动可视化已使用偏振成像进行。该技术使用线性偏振度 (DOLP) 来进行流动可视化，而不是传统成像方法中使用的强度信息。实验结果表明，偏振成像捕获的SWBLI瞬时结构与使用强度信息时的结构相同，验证了偏振成像的可行性。DOLP结果和强度信息的图像融合将进一步提高流动可视化效果。通过统计分析可以看出，当入射光强度不均匀或随时间波动时，偏振成像会减弱入射光对成像的影响。图形摘要