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。
The proposed drag reduction mechanism and drag reduction method are valuable both theoretically and in engineering to realize the low drag pipeline transport of highly viscous fluid.
所提出的减阻机理及工程减阻方法对实现高粘度流体的低阻力管道输送具有重要的理论指导意义和工程应用价值。
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 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。
The effects of the tip shape of V-groove on drag reduction and flow field characteristics by numerical analysis;
近年来对于水下条纹沟槽表面减阻的研究多集中在试验方面，理论分析和数值计算进行的却不多。
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。
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。
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 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；
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。
In this paper, under the gas-liquid stratified laminar and turbulent flows, and the mixture turbulence flow by aeration in pipe, the laws of drag reduction have been researched.
本文研究了圆管中气液分层层流、分层紊流及掺气混合紊流情况下的阻力减小规律。
The researches of drag reduction by grooved surface in water are mostly concentrated in experimentations recently, and researches in theory and numerical calculation are lacked.
近年来对于水下条纹沟槽表面减阻的研究多集中在试验方面，理论分析和数值计算进行的却不多。
This paper gives a brief introduction of the drag reduction characteristics of the dilute solution of high polymer in pipelines, the possibility of its application to oil pipelines.
本文简要地论述了高分子聚合物稀溶液管道减阻的特点，并探讨了在输油管道上应用的可能性与存在问题。
Considering the results of leading edge holes examples should be compared with experimental results, and further studies to determine the key parameters of the effective drag reduction.
考虑引流方案的有关计算结果仍需与模型实验结果进行对比分析，进一步研究以确定有效减阻的关键参数。
Currently, the research target of this realm is raising the drag reduction efficiency, at the same time, is increasing its anti-to shear function and lower the usage cost as far as possible.
目前，这一领域的研究目标是在不断提高其减阻效率的同时，尽量增强其抗剪切稳定性及降低其使用成本。
The drag reduction of plane-surfaces with V-shaped grooves is given out by direct numerical simulation, and the drag reduction mechanism in the base of the secondary flow theory is suggested.
利用直接数值模拟方法求得平板上V—型条纹表面上的降阻情况，并给出基于二次流动理论的降阻机理。
The drag reduction of plane-surfaces with V-shaped grooves is given out by direct numerical simulation, and the drag reduction mechanism in the base of the secondary flow theory is suggested.
利用直接数值模拟方法求得平板上V—型条纹表面上的降阻情况，并给出基于二次流动理论的降阻机理。
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