东南大学学报（自然科学版）2012，Vol.42Issue(5)：910-914,5.DOI:10.3969/j.issn.1001-0505.2012.05.021
颗粒相运动参数的光纤式高速摄影测量方法
Measurement method of particle phase motion parameter based on fiber high speed photography
摘要
Abstract
The measurement method based on the fiber high speed photography and the corresponding system are proposed for measuring particle phase motion parameters in a dense phase gas-solid flow. First, a fiber-optic endoscope is inserted into the measurement area of a dense phase gas-solid flow illuminated by halogen. Particles crossing the measurement area are imaged by a high speed industrial camera. Each image of the recorded videos is preprocessed to be clear and without distortion through the noise-removing. Then, particle instantaneous velocities are figured out from a series of images in the video by particle recognition and tracking algorithms. The particle phase velocity distribution characterizing the flow properties is statistically calculated from them. This measurement system is employed in the experimental study of a 3D spouted bed with the diameter of 200 mm and the height of 1 500 mm. The experimental results show that the particle motion characteristics in the axial section of a spouted bed can be classified into three parts of A, B, C according to the radial distribution of particle phase axial velocity. The region boundary between part A and part B is the surface where the particle phase axial velocity trends to zero. It is also the interface between spout and annulus area, which is consistent with the theoretical prediction in other literature.关键词
颗粒两相流/喷动床/光纤内窥镜/高速摄影/图像处理Key words
particle two-phase flow/ spouted bed/ fiber-optic endoscope/ high speed photography/ image process分类
能源科技引用本文复制引用
张继彬,陆勇,钟文琪,陈曦,陈瑜,任冰,金保昇..颗粒相运动参数的光纤式高速摄影测量方法[J].东南大学学报（自然科学版）,2012,42(5):910-914,5.基金项目
国家重点基础研究发展计划(973计划)资助项目(2011CB201505)、国家自然科学基金资助项目(51176035)、科技部中欧国际合作资助项目(2010DFA61960)、教育部留学回国人员科研启动基金资助项目. （973计划）
