双光束激光多普勒测速系统  

Twin-beam laser Doppler velocity system

作　　者：李正正[1] 蔡虹[1] 洪小刚[1] 邹翔[1] 杨硕[1] 马月[1] 郑建亚[1] 夏顺保[1] 高立模[1] 

机构地区：[1]南开大学物理科学学院,天津300071

出　　处：《物理实验》2005年第3期44-47,共4页Physics Experimentation

基　　金：南开大学第二届本科生创新科研"百项工程"立项项目

摘　　要：激光多普勒测速以其高精度、使用方便而在速度测试领域得到广泛的应用. 本文介绍了激光多普勒测速和双光束测速系统的基本原理,并对流体速度进行了测量,得出了相应的实验结果.Laser Doppler velocity is widely used in the measurement field of velocity for its high accuracy and easy-used property. This paper studies the principle of laser Doppler velocity and the twin-beam system. The measurement of fluid velocity has been carried out with the twin-beam laser Doppler velocity system. The experimental results are presented.

关 键 词：流速测量 多普勒效应 拍频 干涉 傅里叶变换 

分 类 号：O351[理学—流体力学] TN247[理学—力学]