一、概述 现代对流体的测速采用了各式各样的新方法;如激光、超声波、放射性示踪、雷达、霍尔效应、电磁效应,光电、热电等,这些方法基于其原理不同,使用范围也各异。 激光测速是利用激光束的多普勒效应,精度高,能实现非接触测量,不破坏流场,可以 I. Overview Modern fluid velocity measurement using a wide range of new methods; such as laser, ultrasound, radioactive tracing, radar, Hall effect, electromagnetic effects, optoelectronics, thermoelectric, etc., these methods are based on their different principles, the use of Also different. Laser speed measurement is the use of laser beam Doppler effect, high precision, non-contact measurement can be achieved without damage to the flow field, you can