含冲击波流场干涉图的图像处理方法研究

The investigation of the image processing method for flow field interferograms containing shock wave

本文研究了含冲击波流场干涉图的图像处理方法,它包括干涉条纹的快束细化算法,冲击波波阵面的提取算法和时间序列冲击波波阵面的配准算法.根据这些算法,在PC-VISION 100图像处理机上开发了应用软件.实验结果表明,该方法可用于定量计算冲击波的传播速度和压力分布,增加了流场干涉图的用途.

In this paper, the image processing method of flow field interferograms containing shock wave has been investigated. The method includes an algorithm of rapid fringes thinning, an algorithm of extracting shock wave-fronts and an algorithm of registering time-serial shock wave- fronts. An application software based on these algorithms is developed for use with the PC-VISION 100 image processing system. The experimental results show that this method can be used to calculate the propagation velocity and pressure distribution of shock wave-fronts and the functions of flow field interferogram are increased.