| 1. | The turbulence intensity is the result of space variation and temporal variation of particle velocity
颗粒速度的紊动强度为速度的空间变化和时间变化共同作用的结果。 |
| 2. | A test analysis of open canal bottom coefficient of roughness anticlimax on turbulent velocity of flow and intensity of turbulence influence
明渠渠底糙率突减对紊流流速及紊动强度影响的试验分析 |
| 3. | The turbulence intensity of particle velocity decreases when particle size or re increases and increases with the increase of fr
颗粒紊动强度随粒径的增大而减小，随fr的增大而增大，随re的增大而减小。 |
| 4. | The turbulent intensity and frequency of the sediment - laden flow are less than those of the clear water flow , but the fundamental structure of the flow remains unchanged
与清水相比较，浑永的紊动强度减小，频率降低，但基本紊动结构并不改变。 |
| 5. | Results show that the longitudinal velocity distribution fluctuates significantly , and that the relative turbulence intensity and reynolds stress have a little increase
结果表明，布设种植圈后，纵向流速分布波动明显，相对紊动强度和雷诺应力均略有增加。 |
| 6. | The extent of attenuation is proportional to the parameter under some assumptions in open channel flow . the lack of a sound theoretical basis for predicting the behavior of coarse particles means that experiments play a critical role
在明渠二维恒定均匀流条件下，经过适当简化和假定得到的结果表明，悬移质运动起到减弱流体紊动强度的作用，制紊作用随参数的加大而增强。 |
| 7. | 2 , application of the modified k - e model by munk - anderson equation to gravity flow in reservoir shows that the modified model overestimates the turbulent intensity in reservoir . it results enhance of momentum exchange in vertical direction and large error in velocity
采用munk - anderson修正的-模型模拟水库重力下潜流，发现该修正模型过高地估计了水库的紊动强度，使垂向动量传递加大，流速误差明显增加。 |
| 8. | By using the three - dimension acoustic doppler velocimeter to measure velocities of flow in an ecological river before and after arrangement of cropping loops , the velocity distribution , turbulence intensity and reynolds stress before and after arrangement of cropping loops are compared
摘要采用三维超声波多普勒测速仪对河道生态修复中种植圈布设前后的工况量测，比较了布设种植圈前后的流速分布、紊动强度和雷诺应力的变化。 |
| 9. | A three - dimensional - acoustic doppler velocimeter is used to measure the velocity components of the flow field in all three coordinate directions for different discharge and measurement site . the influence of measurement site and the depth / vegetation height ratio on the measured velocity profile and turbulence intensity and the renolds stress is analyzed . the characteristics of the measured velocity distributions and the results of the previous investigators are used to select an analytical expression for the shape of the velocity profile
利用三维超声波多普勒流速仪( adv )量测不同位置、不同流量下的瞬时流场。分析了测点位置和水深与植被高度比对时均流速分布的影响。本文还给出了种树段紊动强度及雷诺应力的垂线分布。 |
| 10. | 3 . a three - dimensional - acoustic doppler velocimeter has been used to measure the velocity and turbulence in a compound channel with vegetated and unvegetated flood - plains . particulary in the interface region between main channel and floodplain . the distribution in three coordinate directions of velocity and turbulence intensities and the renolds stresses are presented . the momentum transfer at the main channel flood - plain interface can be described as an apparent shear stress which can be quantified as a function of the local turbulence at the interface
采用adv对滩地种树前后滩槽交界区域的流速场进行了量测。分析了滩槽交界区域的垂线流速、紊动强度和雷诺应力的变化。将滩槽交界的动量传递描述为一表观应力，这个表观应力可以看作是交界面处的脉动函数并将其定量化。 |
