基于数字图像处理的掺气水流 气泡分布研究

通过试验室研究，借助高速数码摄像机，结合VC高级编程技术，开发掺气水流气泡分析软件，提出一种自动识别水气两相流中气泡的数字图像处理方法，为图像处理技术与水气两相流实测研究相结合的尝试和探索。研究成果将提高对高速水流掺气机理的认识，为今后进一步深入研究图像处理技术在水流流场特别是高速水气两相流流场测量中的应用打下良好的基础，对提高掺气浓度的测量水平和精度，进而提高水力模型试验水平、满足工程设计要求等都具有较高的学术意义和实用价值。

Digital image processing based study on bubble distribution of aerated flow

Through laboratory study and based on high-speed digital video camera,a software for analysis on bubble of aerated flow is developed herein incorporated with the advanced VC programming technique for trial and exploration made on the combination between the image processing technique and the study on the actual measurement of the two-phase flow(air-water),and then a digital image processing method for automatically recognizing the bubble in the two-phase flow is put forward as well.This study lays a better basis for the further study to be made on the application of image processing technique to the measurement of flow field,especially high-speed two phase flow field in the days to come;which has a higher applicable value for enhancing the level and accuracy of the measurement on the aeration concentration,improving the level of hydraulic model test and meeting the requirement from the engineering design concerned.