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本论文针对流场颗粒成像测量,通过对二维颗粒场成像图像的像点灰度分布、像点直径以及光照强度的影响等进行了研究,提出了流场像点图像的颗粒成像特性分析方法。基于像点直径的概念,推导了颗粒成像法测量颗粒场时的最大极限浓度估算公式。
In this dissertation, the particle image measurement of flow field is studied. The effects of the grayscale distribution, the pixel diameter and the light intensity of two-dimensional particle field image are studied. . Based on the concept of image point diameter, the formula of estimating the maximum limit concentration for particle field measurement is deduced.