摘要
三维粒子动态分析仪（３－ＤｉｍｅｎｓｉｏｎａｌＰａｒｔｉｃｌｅＤｙｎａｍｉｃＡｎａｌｙｚｅｒ）是利用激光多普勒频移原理，来测量两相流动中球形粒子的速度、粒径、浓度等参数，从而进一步得到三维湍流流动中粒子动态特性的一种激光测速设备。在其采集过程中自动建立的数据文件是以二进制形式存贮的，而且记录的都是每个球形粒子的信息，不能直接求平均及湍流计算。本文给出了处理这些数据的基本方法，通过编制的Ｃ语言程序得到各测点所通过的粒子数、三维速度、湍流特性以及相对体积流量，为ＰＤＡ数据软件的进一步利用与开发提供了很大的方便。
The three-dimensional particle dynamic analyzer is a kind of laser veloci-ty-measuring instruments with laser doppler frequency and phase deviation,which is widely used in measuring of the velocity and diameter of particles in two-phase folw.During the processes of data acquisition,the original data doctiments,which are pro-duced automatically and stored in binary system,are not only unconvenient for reading butalso unable to transfer directly for next step calculation.In this paper,a new data processing methed used C language program has been put forword to obtain the charac-teristics of particles,which is convenient for further utilization and development of orig-inal data software pf 3D-PDA.
出处
《激光技术》
CAS
CSCD
1994年第5期257-261,共5页
Laser Technology
