激光推进流场演化的高速阴影测量方法
Application of high-speed shadowgraph technology to flow field evolvement diagnosis of laser propulsion
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摘要: 介绍了高速阴影技术在激光推进流场演化诊断过程中的应用。采用了阴影技术和高速摄影相结合的方法，对激光推进流场演化过程进行了考察。由高速相机提供时序零时，控制激光器和闪光源的延迟时间，再对高速相机进行同步曝光，解决了高速阴影测量过程中高速相机、闪光仪和激光器的时序控制问题，实验获得了清晰的流场演化图像，为进一步研究提供了实验依据和便利条件。Abstract: The application of high-speed shadowgraph technology to flow field evolvement diagnosis of laser propulsion is presented. Shadow technology and a high-speed camera are combined to investigate the flow field evolvement. The zero point of the time sequence is provided by the high-speed camera, the delay time of laser and strobo is setted in advance, and all the equipment could be synchronized. The time sequence is designed and the time interval between high-speed camera, strobo and laser is controlled. In the experiment, clear flow field evolvement pictures were obtained.
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Key words:
- laser propulsion /
- flow field /
- evolvement /
- high-speed camera /
- high-speed shadowgraph technology
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