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- wave drag reduction 减阻
- Simulation results show that the traveling wave of the tube innerwall generates the vortexes which are beneficial to the drag reduction of the traveling wave wall. 仿真结果表明：在流动中，管道内壁随行波产生有利于壁面减阻的旋涡，且旋涡疏密与随行波的宽高比有关。
- The MHD control of drag reduction in pipe flow is studied through DNS. 利用直接数值模拟研究了圆管湍流减阻的电磁力控制问题。
- An Analytical Model of Mountain Wave Drag for Wind Profiles with Shear and Curvature. 有切变和曲率风廓线的山地波阻力的分析模式。
- Drag reduction with W/O polyacrylamide latex(PAM)in water was studied in thispaper. 研究了W/O型聚丙烯酰胺（PAM）胶乳在水中的凉阻性能。
- The wave drag coefficient also increases with increasing upswept angle at transonic speed. 在跨音速时，波阻系数也与上翘角有关，上翘角增加会导致波阻系数进一步加大。
- The wave drag increases with increasing upsweep angles and decreases with increasing flatness of the aftbody. 上翘 角增大，后体激波阻力增加；后体越扁平，后体激波阻力略有减小。
- 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 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 pour point depressant(PPD)and drag reduction agent(DRA)play a key role in the oil transportation in Kelamayi Oilfield. “两剂”(降凝剂和减阻剂)在克拉玛依油田原油外输中发挥了非常重要的作用。
- In transonic flow, a simple empirical formulation is given to predict the wave drag of upswept aftbody, which extends the usable range of Mach number. 在跨音速范围，给出了一种简 单的上翘后体波阻的估算方法，拓宽了马赫数的适用范围。
- Based on theoretical analysis, microbubble drag reduction is due to structure change of turbulent boundary layer caused by the microbubbles. 理论分析提出微气泡降阻机理在于其引起湍流边界层结构的变化；
- It is found in the experiment that the bigger the WCA or the more hydrophobic water is, the more remarkable the effects of drag reduction would be. 因此，利用激光刻蚀表面方法可以在一定程度上调控固体表面的疏水性进而控制减阻特性。
- The results also show that both gravity wave drag and envelope orography have smaller influence on model results in the beginning of simulation, but greater in the later stage. 不论是地形重力波拖曳还是包络地形，在模式积分的初期，它们的作用并不明显，随着积分时间的增长，它们对模拟结果的影响程度增大。
- The site application shows that HG type DRA has remarkable drag reduction effect and throughput increasing capacity for imported oils. 现场应用结果表明,HG减阻剂对于多种进口原油均具有较好的减阻效果和增输能力。
- As the tradition method can only estimate the addition of wave drag from subsonic to supersonic, and can not calculate the change of drag when Mach number increases. 由于传统的工程计算方法只能估算旋成体从亚音速到低超音速的波阻增加量，不能计算阻力随马赫数增加而引起的变化。
- The bio-inspired anti-adhesion and drag reduction technology has become a new field of the research and applications of biomimetics. 这种基于非光滑表面的仿生减阻抗粘技术已成为仿生学研究和应用的一个新领域。
- Recently, one of her research focus is on understanding the intriguing and practically important phenomenon of drag reduction by polymer additives in turbulent flows. 最近,她的其中一项研究工作是理解高分子在湍流中减阻这一有趣而有重要实用性的现象。
- The measurement technique of constant temperature anemometry was used to study experimentally the mechanism of drag reduction in turbulent boundary layer with riblet surface. 摘要应用热线测速技术，对沟槽壁面平板湍流边界层的减阻机理进行了实验研究。
- The drag reduction agent (DRA) for gas pipeline is a new technology used for reducing friction or drag on a gas flowing to increase the transmission efficiency of gas pipeline. 天然气管道输送减阻剂是一项新型管道减阻技术,国内首次开展了相关研究。
