| 1. | Calibration method of rotating . element current . meters in straight open tank
直线明槽中转子式.流速仪的检定方法 |
| 2. | A series of experiments on the motion characteristics of light polystyrene particles and heavy glass particles were carried out in open channel flow
对轻质沙和重颗粒在明槽水流中的运动特性进行试验，明确提出了颗粒运。 |
| 3. | A measurement system was developed based on flow visualization and image processing techniques , which can be used to investigate the spatial structure of low - speed streaks in the near wall region of turbulent open channel flow
基于流动显示和图像处理技术，独立开发了明槽紊流近壁区带状结构的实时测量系统。 |
| 4. | Real - time surface velocity field measurement system and three - dimensional particle velocity measurement system are developed . systematic experimental research on the movement of coarse sediment particles in open - channel flows was carried out using developed system
本文研制开发了表面流场实时测量系统和颗粒三维运动测量系统，并采用颗粒三维运动测量系统对明槽水流中粗颗粒的运动进行了系统的试验研究。 |
| 5. | In this paper , the spatial structure of the low - speed streaks and particle motion in the near wall region of turbulent open channel flow were observed on the side and bottom of a water flume , respectively , using flow visualization and image processing techniques
本文以试验研究为主要手段，采用流动显示和图像处理技术，从水槽底部和侧面两个方向测量，分别对明槽紊流近壁区的带状结构及颗粒运动特性进行了系统的试验研究。 |
| 6. | It is a reliable instrument for the measurement of the coherent structure in turbulence . an improved 2 - d ptv was developed based on previous research experiences , which can be used to measure the trajectories of particles motion . for the experimental study on the particle motion in the dilute solid - liquid two - phase flow , especially for the motion characteristics and dynamic characteristics of coarse particles in water , this kind of system was proved to have great advantages
利用该系统可获取大量的统计样本并进行计算机快速分析，为明槽紊流相干结构的试验研究提供了一种崭新的测量手段；在前人工作的基础上，开发了一种能够测量水流中颗粒运动轨迹的ptv系统，该系统具有可靠的精度，能同步测量全剖面的颗粒瞬时运动信息，为颗粒运动特性及动力学特性的试验研究提供了强有力的手段。 |
| 7. | For dilute solid - liquid two - phase flow , the mechanism of particle motion driven by fluid is the main subject , especially the particle motion in the near wall region . the bursting phenomenon and coherent structure of turbulence play an important role on the motion of particles in the near wall region
明槽紊流近壁区的颗粒运动与紊动猝发现象及紊流相干结构有着密切的关系，开展近壁区颗粒与紊流相互作用的机理研究对于流体力学和泥沙运动力学都有着重要的理论意义和实际价值。 |
| 8. | A series of experiments in a wider range of reynolds number were conducted for the investigation on the spatial and temporal distribution of the low - speed streaks in the near wall region of turbulent open channel flow . for the first time , the relationships between the spacing , the width , the length scale in the streamwise direction and the duration time of low - speed streaks and the reynolds number based on shear velocity were revealed
在水力光滑区和过渡区对明槽紊流近壁区的带状结构进行试验，测量并分析了带状结构的分布，首次揭示出低速带间距、宽度、纵向尺度及持续时间等随摩阻雷诺数的变化规律。 |
