Research of the reference-beam laser Doppler velocimeter 参考光束型激光多普勒测速仪的研究
The bottom boundary layer under cnoidal waves was studied by using Acoustic Doppler Velocimeter ( ADV) technique in a laboratory flume. 通过波浪水槽试验,利用ADV测量椭圆余弦波作用下不同底床情况,垂线上各点的瞬时流速。
The tangential velocity distribution in the annular region of a turbo air classifier was investigated by laser doppler velocimeter ( LDV). 采用激光多普勒测速计研究了涡流分级机环形区气流的切向速度分布。
Numerical Simulation and Particle Image Velocimeter Measurement for Unsteady Turbulent Flow in Double-channel Pump 双流道泵内非定常流动数值模拟及粒子图像测速测量
The structure and design of hardware and software of the digital fiber sound velocimeter, which based on the digital signal processor MC68VZ328, are explained in details. 详细阐述基于MC68VZ328的数字式纤维声速取向度测量仪的软、硬件设计。
The experimental research of laser Doppler velocimeter in backscatter 后向散射激光多普勒测速仪的实验研究
Measuring the precision of laser Doppler velocimeter based on counting 基于计数法测量激光多普勒测速仪的测速精度
Vector velocity laser velocimeter 向量速度激光测速仪
Tracking laser surface velocimeter used for landslide monitoring 用于滑坡监测的自动跟踪激光表面测速系统
Application of differential laser Doppler velocimeter in solid velocity measurement 差动激光多普勒测速仪在固体速度测量中的应用
Using new technology, the design of velocimeter with high-precision and fast-reaction has carried out. 利用该领域的新技术,可以设计出精度高、反应速度快的声速仪。
For dimension measurement, it employs laser scan distance sensor, laser velocimeter to get the dimension information. 利用激光扫描测距探头,激光测速探头,经处理获得扁平材的尺寸数据,对热轧扁平材宽度和长度的在线测量。
A simple spectrum-analyzing type laser velocimeter with high-accuracy is proposed. 提出一种结构简单、测量精度高的频谱分析型激光测速系统。
Application of laser Doppler velocimeter to cavitation water tunnel 激光测速仪在空泡水筒中的应用
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. 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 application of laser velocimeter, high-speed digital camera and image processing software can be used to solve this problem and it is well received by athletes and coaches. 在实践中,运用激光测速仪、高速数码摄像机和图像处理软件较好地解决了这个问题,受到运动员和教练员的欢迎。
This paper describes the operation principles, characteristics and applications of a two-dimensional laser Doppler velocimeter. 本文介绍作者研制的两维、可辨别流向的激光多普勒测速仪的原理、特点及应用。
Acoustic-Doppler Velocimeter Automatic Measuring and Analyzing System 声学多普勒流速仪自动测量和分析系统
A turbulent separation-reattachment flow in a two-dimen-sional asymmetrical diffuser was surveyed by a two-dimensional Laser Doppler Velocimeter. 本文采用二维激光多普勒测速仪测量了二维非对称曲壁扩压器内的湍流分离再附流动。
Hardware and software are made. The construction and the operation principle of the velocimeter are introduced as well as its features. 设计了软硬件,介绍了测速仪的结构、工作原理、功能特点;
The structure and the experimental results of a remote controlled pulsed laser Doppler velocimeter is described. 介绍一台脉冲激光遥控测速仪的结构和实验结果。
Including the Acoustic Doppler Velocimeter ( ADV) and Planar Laser Induced Fluorescence ( PLIF) measurement techniques, the whole experiments and its analysis systems are established for measuring the characteristics of velocity fields and concentration fields of turbulent round jets in different flowing ambient. 建立了利用超声多普勒测速技术(ADV)和平面激光诱导荧光技术(PLIF)研究不同流动环境中紊动射流速度场特性和浓度场特性的实验量测和分析系统。
On the basis of the light scattering theory of spherical particles and the characteristic of the water mist, the optimum optical path for 3D APV ( adaptive phase/ Doppler velocimeter) and reasonable layout of the system are designed. 结合细水雾的特点和粒子的光散射理论,对三维APV(AdaptivePhase/Dopplervelocimeter)的光路系统设计了合适的参数,并进行了合理地布局。
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。
Sound velocimeter and X-ray Diffraction ( XRD) were used to measure the crystallization and orientation of the fiber. 通过采用声速仪、X-射线衍射(WXRD)等分析与检测手段对纤维取向度和结晶度进行了测定。
This paper researchs on and improves the pulse laser velocimeter technology basic on theory and experiment. 本文在已有的理论和实验的基础上,对脉冲激光测速技术进行了研究以及改进。