Doppler laser velocimeter is employed to measure the velocity field around hanged grid &deflector plate. 用多普勒激光测速系统对悬栅和悬板栅附近流场进行了测试,分析了悬栅、悬板栅的消能效果。
The flow field in the labyrinth channel is measured using a 2-D LDV(Laser Doppler Velocimeter). 利用二维激光多普勒测速仪（LDV）对模型的迷宫式流道进行了流场测量。
The PYJC laser Doppler velocimeter preshifted by means of Bragg Cell is described. 介绍了PYJC频移激光测速仪的光学原理。
An Experimental investigation on the flow fi el d in vaned diffuser of a centrifugal fan has been conducted using Laser Doppler Velocimeter (LDV). 利用激光多普勒测速仪(LDV)测量了离心风机叶片扩压器的内部流场。
In order to meet the need of laser doppler velocimeter inland,a dual-beam direction recognizable LDV is designed in this papper. 针对国内对激光多普勒测速仪的需求，本文设计并研制出一套双光束可识别方向的激光多普勒测速仪。
The interstage flow field is analyzed by means of noncontact measuring and visualization device, such as PIV laser velocimeter. 采用不接触测量，如PIV激光测速等可视化测量手段，便于对级间流场的分析研究。
