基于PIV技术的水中气泡图像测速法

The image velocimetry of bubble in water based on PIV

分析了现有粒子图像测速技术(PIV)的不足,研究气泡在水中的形态,提出了一种基于PIV技术的气泡图像测速方法.通过片光源的照明,提取气泡的二维图像信息,比较单位时间内图像信息的变化,能快速得出气泡在垂直于片光源所在平面上的速度,使在二维平面内的图像测量更加精确、迅速.

The deficiency of current PIV （particle image velocimetry） technology was analyzed in this paper. A new method of bubble image veloeimetry based on the configuration of bubble in water of PIV was put forward. By illuminating with slice laser source, distilling the two-dimension image information of bubble, and comparing the movement of image information in unit times, the velocity of bubble in the direction of vertical with the light source can be educed rapidly, it makes the image veloeimetry of twodimension plan more accurately and fleetly.