测速仪

为了进一步揭示这一复杂流动现象的特性和物理模型，该文应用激光Doppler测速仪和七孔气动探针对一环形压气机叶栅在大攻角下的流道内部和流道出口的流场进行了实验研究。

In order to understand the characteristics of this complicated phenomenon , a strongly separated flow in an annular compressor cascade at large incidence was investigated using Laser Doppler Velocimeter ( LDV ) and 7 hole pneumatic probe .

本文介绍差动式多普勒激光测速仪的工作原理和光学系统，解释其差动机理的应用及对改善SNR的作用。

The principles of operation and the optical sketch of polarized Doppler Laser Velocimeter have been presented in this paper . The mechanism of its differential utilization and the effect on improvement of S.N.

基于激光测速仪的秒流量控制AGC

Control over the Mass Flow AGC with Laser Velometer

利用激光多普勒测速仪（LDV）测量柯安达流的附壁点位置

Measurement of the Attachment Point Position for Coanda Flow Using LDV

为了深入了解旋转涡轮叶片内冷通道中的流动特性，用激光多谱勒测速仪（LDA）测量了旋转U型通道中的平均速度分布。

Detailed mean velocity distribution of a rotating U-bend duct was measured with LDA .

随着计算机和图像处理方法的迅猛发展，粒子图像测速仪（particleimagevelocimetry，简称PIV）和图像测量技术得到了迅速的发展。

Particle Image Velocimetry ( PIV ) and its image measurement techniques have been rapidly developed with the drastic development of image processing method and computers .

基于PIV测速仪得到了多种工况射流中线流速分布资料。

The jets centerline velocity distributions were measured by the PIV for a wide range of operating conditions .

本文给出了用激光多普勒测速仪（LDA）测量涡旋式电弧等离子体化学反应器流场的实验研究结果。

The results of experimental investigation on the flow field in the vortex arc-plasma reactor by LDA are presented .

利用粒子图像测速仪（PIV）对循环流化床中颗粒流场进行了系统的实验研究。

Particle Image Velocimetry ( PIV ) was used to investigate particle velocity field in a riser of gas-solid circulating fluidized bed .

利用粒子图像测速仪（PIV），对板翅式换热器封头结构改进前、后的流场进行了可视化研究分析。

Flow characteristics of flow field in the header of a plate-fin heat exchanger were investigated with particle image velocimetry ( PIV ) .

本文首先使用微观粒子测速仪测量了微直管道中的电渗现象，通过流场中平均速度与外电场的关系间接测量了管壁的Zeta电势，并将之用于数值模拟。

In the thesis , EOF in a straight channel is measured . Zeta potential is obtained indirectly and used in following numerical simulation .

提出了脉冲式半导体激光测速仪具体设计方案，对误差来源进行分析，并采用模数转换技术AD电路来提高测速精度。

We also bring forward the idiographic plans and analyze the cause of the errors . There are many virtues to improve the precision of measure velocity by using modulus conversion technique A / D electrocircuit .

利用粒子图像测速仪（PIV）对圆筒形容器内有自由表面变形的粘弹性流体旋转流动进行了实验研究。

In this paper , PIV ( Particle Image Velocimetry ) is applied to study the characteristic of in-cylinder flow field under different valve lifts .

硬件系统设计，完成对雷达测速仪基带处理单元的设计，包括A/D转换器的选择，确定DSP芯片及其外围电路的工作频率元器件的选择，硬件连接电路的设计，工作方式设置等。

Hardware system design is to complete the baseband processor unit design of radar system , including choosing the A / D converter , determining the DSP chip and its peripheral circuit operating frequency , connections of DSP and MCU .

本文介绍应用双色激光多普勒测速仪（LDA），测定水平圆管内气固两相流的方法，并对试验结果进行了详细讨论。

This paper introduces a determination of an air-solid two-phase flow in a horizontal pipe of circle by two-color laser-doppler anemometry and results are discussed in detail .

应用PIV激光粒子图像测速仪对由离心式压力雾化喷嘴喷出的锥形液膜的破碎进行了实验研究。

An experimental study on the breakup of a conical liquid sheet from a pressure swirl atomizer was conducted by using a Particle Image Velocimetry ( PIV ) system .

HF-1型多用测速仪的研制与喷气纺纱气圈转速的测试

The Principle of HF-1 Multifunction Tachometer and Its Application in Yarn Balloon Measurement

用粒子图像测速仪（PIV）设备对不同高度下肋板的非定常绕流场进行了全场测试，揭示了肋板尾流场旋涡随时间推进所经历的非线性演化过程。

By taking advantage of PIV ( Particle Image Velocimetry ) technique , the unsteady flow fields around different ribs are captured , which reveals the nonlinear evolution processes of vortices .

在浙江工业大学水力学实验室的直流式水洞中利用三维粒子图像测速仪（PIV）等先进的量测技术，在不同的掺气浓度条件下，对空化区流速场和压力场进行了测量与分析。

Velocity Field and pressure Field in cavitation region with different air concentrations were observed in details by using three-dimensional Particle Image Velocimetry in the Hydraulics Laboratory at Zhejiang University of Technology .

为了深入认识螺旋管内多相流相分离现象，应用粒子图象测速仪（PIV），对组合弯管内气水砂三相流底部水平段和上升段中液膜区的流场进行了测量。

Liquid film flow field in gas-liquid-solid three phase flow through a curved pipe were measured by Particle Image Velocimetry ( PIV ) for a better understanding of the phase separation phenomena .

利用激光多普勒测速仪（LDV）对后弯闭式离心叶轮内部气流在非设计工况下的流动进行了实验测量。

An experimental investigation of the shrouded centrifugal backswept impeller flow field has been conducted at off-design flow using Laser Doppler Velocimeter ( LDV ) and shaft encoder .

本文应用二维激光多普勒测速仪（LDV），对二元通道内近壁间歇性反流特征做了尝试性测量。

The investigation of the upstream-downstream intermittent reversing flow in the near wall of a 2-D channel is attempted with a 2-D laser doppler velocimeter ( LDV ) .

得到了不同封头结构的物流分配不均匀特性与雷诺数之间的关系式.利用粒子图像测速仪（PIV），对板翅式换热器封头结构改进前、后的流场进行了可视化研究分析。

Flow distributions of header configurations in plate-fin heat exchangers with particle image velocimetry ( PIV ) The correlations of the flow maldistribution characteristic with Reynolds number are obtained under different header configurations .

传统航位推算算法依赖于多普勒测速仪（DVL）采集的速度数据和姿态传感器采集的姿态数据。

Therefore , traditional dead reckoning method relies highly on velocity sensor as Doppler Velocity Log ( DVL ) and attitude sensor .

最后给出了用激光多普勒测速仪（LDV）测出的JIB2型变扭器导轮叶片水洞速度场数据及流场照片。

At last the fluid velocity passing through JIB_2 convertor 's director blades in water tunnel is given by use of LDV and the pictures of fluid field are given .

SCL-I型运动雷达测速仪的功能、应用与改进

Functional Application and Improvement of SCL-I Model Sports Radar Velocity Finder

在不同流量和分流比的多个工况下应用LDV/APV可适性激光多普勒测速仪，对35mm液液分离水力旋流器模型各锥段的不同截面进行了流场测量。

The velocity fields in a liquid-liquid hydrocyclone model were tested with a two-dimensional LDV / APV system under different conditions of flowrate and overflow ratio .

为探索闪急沸腾喷雾的形成机理，以氟里昂R12为试验掖体，采用激光多普勒测速仪（LDA）测量了稳定流动条件下粒子的速度分布。

In order to understand flash boiling injection , the drop velocity distribution in steady spray of freon R12 as test liquid was investigated by using LDA technique .

为了校正商用超声Doppler测速仪由于没有考虑壁效应而在Doppler角度和测量位置的确定上引起的较大误差，对超声Doppler测速仪（UDV）在非接触式测量的壁效应进行了实验研究。

Wall effect of the non intrusive ultrasound Doppler velocimetry ( UDV ) measurements was investigated experimentally to modify the measurement error due to the wall effect in the Doppler angle and measurement location by a commercial ultrasound Doppler velocimetry .

冷轧薄板厂二次冷轧机组采用TSI公司的Model3000型激光测速仪对带钢速度进行检测。

Model 3000 LDV ( Laser Detector Velocity ) made by TSI is applied in DCR ( Double Cold Reduction mill ) line to detect the rolling speed of strip .