摘要
该文介绍利用由2台相机构成的三维PIV成像系统记录流场的流动.实验首先通过标识框确定透视像距,实现两相机的标定,在暗室中将两相机快门常开,调节闪光灯以一定的频率曝光2次,使每一相机底片上同时记录下2个时刻的粒子图像.基于实验应用此三维PIV成像系统,对用透明有机玻璃制成的振荡流反应装置进行拍摄,获得一组记录粒子图像的图片,应用VC图片识别程序及MATLAB程序成功获得了反应器内某一瞬时的速度矢量图,证明此测速方法是可行的.
The flow of three- dimensional Flow field was recorded by the 3D- PIV Image system, which was constituted by tow traditional cameras. The perspective image distance was obtained by the marking frame to ascertain the position of the two traditional cameras, Camera shutter was opened in the Dark room, Flash lamp was set to a certain frequency to make the film exposed to light two times in a certain time, So the flow trace of the particle in two times was recorded on the same film. Based on experiment, the imaging system was used to record the trace of the particle in OFR; two pictures were obtained by imaging, the velocity diagram was obtained by using VC and MATLAB Procedure, which proved that the method was feasible.
出处
《实验技术与管理》
CAS
2006年第8期36-38,共3页
Experimental Technology and Management
