DPIV流场测试技术中的数据处理

Processing of DPIV data

研制了双 CCD单镜头 DPIV系统 ,用于测试二维流场 ;并利用互相关函数、自相关函数的特性对实验所得的图像数据进行分析处理 ,得到了测试流场中瞬时的速度分布 .

A digital particle image velocimetry (DPIV) system comprising two CCD cameras and a single lens has been developed. The DPIV system is used to investigate 2 D flows. Cross correlation and auto correlation techniques are used to analyze the experimental data to produce a vector map of the instantaneous velocity field.