The degradation of the polymer and its effect on the drag reduction are also discussed.
讨论了聚合物降解的情况及对减阻的影响。
The types and mechanisms of shape drag reduction were classified and analyzed respectively.
将形体减阻分为几何非光滑与柔性非光滑两种形式。
The fundamental principle of the plasma drag reduction and its key technologies are discussed.
分析了等离子体减阻的基本原理及所涉及的一些关键技术点。
The results are meaningful for explaining the mechanism of drag reduction from submicroscopic level.
所得结果对于从亚微观层次解释减阻机理有实际意义。
It is an effective way to increase transmission capacity of pipelines by adding drag reduction agent in oil of pipeline.
在管输油品中加入减阻剂是提高管线输送能力的有效方法。
This paper presents the general principle and method of bleeding drag reduction characteristic design of base bleed projectile.
本文提出了底部排气弹减阻特性设计的一般原则与方法。
The drag reduction of the notchback car platoon is the most, that of the squareback is the next, and the fastback is the least.
阶背式轿车队列的平均减阻率最大，直背式次之，快背式最小。
The authors also tested the flat plates with and without the Biblets drag Reduction Film in wind tunnel and compared their fluid drags.
作者在风洞中做了贴及不贴微肋薄膜平板试验对比。
An idea of drag reduction by pre-stirring on pipeline transportation of highly loaded coal-water slurry is firstly proposed in this paper.
木文首次提出了高浓度水煤浆管道输送搅拌减阻的思想。
Finally, in addition to developing new surfactant additives, the trends of surfactant drag reduction research in the future are discussed.
最后，在提出开发新的表面活性剂添加剂的同时，对进行表面活性剂减阻的研究趋势进行了展望。
This paper introduces the experimental results of influence of two kinds of tail shapes on drag reduction of base bleed and discusses briefly.
介绍了两类不同尾部外形对底排弹减阻性能影响的实验结果，并进行了简要讨论。
Working area for drag reduction agents (dra) is in turbulence area, and it can reduce resistance as well as increase transportation effectively.
减阻剂的作用区域在流体的湍流区，它能有效的降低流体阻力增加流量。
The experiment results demonstrate that the balloon actuators can be used for separation delay and drag reduction to realize active flow control.
实验证明：所开发的气泡致动器可以有效地进行延迟分离，降低压差阻力，实现了主动流动控制。
It is employed the concept of multi-scale coherent structures to study the mechanism of riblet surface drag reduction in turbulent boundary layer.
将湍流多尺度相干结构的概念引入沟槽壁面湍流边界层减阻机理的研究。
More mature drag reduction tools have been developed abroad, but the domestic drag reduction tool research and development is still in its infancy.
国外已有较为成熟的减阻工具，而国内的减阻工具研发工作尚处于起步阶段。
The new type of rheology controller has its application potential in drilling, Enhanced Oil Recovery (EOR) and liquid transportation drag reduction.
这种新型流变控制剂在钻井、提高采收率以及流体输送减阻中具有潜在应用价值。
Based on our flow visualizations, a new mechanism of drag reduction is proposed. The device has been refined and net drag reduction has been achieved.
建立在自己流动显示的基础上，提出了新的减阻机理，改进了设计，并获得较好的减阻效果。
The adding of the drag reduction agent can reduce the friction force of the current and increase the flow speed as well as increase the conveying distance.
引入减阻剂后，可降低湍流磨擦阻力，提高流速。增大输送距离和提高管道输送能力。
The experiment shows that it can drag reduction and extend the discharge distance of pipeline transportation by ejecting compressed air to dredger pipeline.
分析了管道输送加气减阻的机理和延长排距的效果，在模型试验的基础上进行了实船试验。
The effects of PLMA′s relative molecular mass, content, temperature and flow state on the drag reduction effectiveness and the shear stability were discussed.
考察了其粘均相对分子质量、质量分数、温度及流态对减阻效率、抗剪切稳定性的影响；
It is found that the variation of planforms and geometrical parameters can effect only the drag reduction but little to the low lift in low angle of attack condition.
发现单纯改变涡襟翼的形式和参数能提高减阻效果，但不能改变小迎角下升力过小的现象。
The experimental results of the effect of base bleed propellant composition on the aerodynamic performance of drag reduction and range increase of base bleed projectile.
介绍了底排药剂成份对底排弹减阻增程气动力性能影响的实验结果。
When the flow rate of the liquid slipping along the solid surface exceeds that of a critical speed, slipping will occur and drag reduction will be realized consequently;
当液体沿固体表面的流速超过临界速度时，出现滑移，这样能实现减阻；
Research on drag reduction mechanism of supercavitation shows that supercavitation can reduce not only the friction drag coefficient but also the pressure drag coefficient.
超空泡减阻机理的研究表明：超空泡不仅可以减小回转体的摩擦阻力，还可以减小回转体的压差阻力。
Internal coating used in high pressure, large diameter and long distance gas pipeline has two main functions, one of them is anti corrosion and the other is drag reduction.
高压、大口径、长输天然气管道采用内涂层主要具有两大功能，一是防腐蚀，二是减阻。
The effect of lift enhancement with the Lorentz force acted on the tail is better than the front, and the drag reduction is better with the Lorentz force applied to the front.
电磁力作用在后部对升力的提升比作用在前部好，而覆盖在前部的减阻效果比作用在后部的好。
The effect of lift enhancement with the Lorentz force acted on the tail is better than the front, and the drag reduction is better with the Lorentz force applied to the front.
电磁力作用在后部对升力的提升比作用在前部好，而覆盖在前部的减阻效果比作用在后部的好。
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