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- The paper presents an engineering calculation method for the base drag of base bled projectiles based on the base drag reduction characteristics duo to base burning of fuelrich solid fuels. 给出一种以固体燃料底排减阻特性为基础的底排弹底阻工程估算方法。
- An investigation on characteristics of base drag reduction with base bleed in subsonic and transonic speeds 亚、跨声速底排减阻特性研究
- Study of the Formulation of Pyrotechnic Base-bleeding Agentfor Base Drag Reduction and Range-extending of Projectiles 烟火型排气剂的配方及减阻增程研究
- Rare particle two-fluid model used for base drag reduction performance about base bleed projectile 稀颗粒群双流体模型应用于底部排气弹减阻性能研究
- Numerical Analysis of Complex Two-phase Flow by Base Drag Reduction Performance about Base Bleed Projectile 复杂两相流动对底部排气弹底部减阻性能影响的数值分析
- Base Drag Reduction 底部拖曳减量
- 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。
- 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 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。
- Then, the base bleed method is introduced on a general supersonic missile to decrease the base drag of the inlet cowl for the first time and is validated by wind tunnel test. 本文首次将底部排气法应用于导弹上,结合一种具有常规气动布局的超声速导弹进行了底部排气方案设计,采用一种“底窝器”来提高进气道整流罩的底部压强,并进行了风洞实验验证。
- 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。
- It is shown that reducing the base drag of projectile and increasing the range of it are possible by means of base bleed burning in subsonic and transonic speeds. 说明在亚、跨声速下采用底排燃烧的方法仍可有效减少弹丸底部阻力增加射程。
- 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;
- To minimize the base drag and obtain optimized result of drag,it is important to select correctly the stern length,stern angle and base bleed parametres. 使用优化设计方法,正确地选择船尾长度、船尾角以及底排装置的各种参数,使其后体阻力最小,达到最佳减阻效果,求得这些参数的优化结果
- 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 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。
- 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。