PDA技术应用在风机动叶流场测量中的几个问题

Several PDA Application Problems in the Measurement of an Axial Flow Rotor

介绍了激光相位多普勒测速 (PDA)技术在轴流风机动叶内部流场测量中的应用 ,对于影响测量精度和效率的几个关键问题 ,如测量窗口的形式的选择、散射粒子的选择、散射粒子加入方式的选择、测量盲区的克服、流动噪音的处理等 ,进行了分析讨论。

The application of laser Doppler technique in the measurement of an axial flow rotor are introduced. When using Laser Phase Doppler Anemometer(PDA)as a tool to measure the three dimensional flow field in an axial flow fan, there are a lot of problems that influence the precision and efficiency of measurement, such as the choice of window style, the choice of particle, how to add particle, how to solve blind field problem of measurement and how to reduce flow noise. These problems are emphatically analysed and discussed. Combining with experience, some receivable methods are put forward and some good measurement results are get.