The Optical Flow Method Research of Particle Image Velocimetry

摘要：

　　As a new experimental technique of aerodynamics,optical flow test technique gradually attracts more and more attention for the advantages of vector field measurement of pixel scale resolution and strong smoothness ability.By means of scalar constraint equation combined with smoothness constraint condition,optical flow test technique can measure global velocity vector field of high space resolution.In this paper,the theory and algorithm of integration minimization optical flow velocimetry were studied,an verification experiment,in which tracer particle images was acquired by high speed camera and velocity vector field was calculated by optical flow algorithm,was completed.The result calculated by optical flow algorithm was compared with the result calculated by PIV algorithm,and both results were significantly correlated.The research shows that optical flow test technique possesses the advantages of space resolution and velocity field smoothness.

关键词： Optical flow Velocity measurement Particle image Motion estimation Integration minimization

作者: Wang Hongwei Huang Zhan Gong Jian Xiong Hongliang

作者单位: China Academy of Aerospace Aerodynamics,No17 West road YunGang FengTai District,Beijing 100074,China

会议类型: 国际会议

会议名称: 2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)

会议地点: 上海

会议语种:英文

页码: 1-7

在线出版日期: 2014-09-24（万方平台首次上网日期，不代表论文的发表时间）