Enhancing Aerodynamic Performances of Highly Loaded Compressor Cascades via Air Injection Study on Annulus Pressure Distribution after Perforation of Composite Perforators 孔隙射流对高负荷压气机叶栅气动性能影响的实验研究(英文)复合射孔器射孔后环空压力分布试验研究
As a result of the research on the new technology to drill horizontal wells with under-balance pressure by air injection, a whole set of practical and effective techniques have been developed in China to solve the special difficulties in under-balance pressure horizontal well drilling by air injection. 通过对注气欠平衡钻水平井的新技术研究,我国基本形成了一套实用有效的注气欠平衡钻水平井的成套技术,可用于解决注气欠平衡钻水平井技术的特殊难题。
Effects of air coolant injection on cascade surface pressure distribution 冷气喷射对直叶栅型面压力分布影响的实验研究
The result shows that the change of pressure of working air has a little influence on injection volume, that properties will not decrease greatly while working pressure varies, and that operating parameters has great influence on structure of wave system of ejector. 结果表明,工作气体的变化对引射流量的影响较小,当工作压力波动时不会引起性能急剧下降,操作参数与几何参数对喷射器的波系结构影响很大。
Effects of coolant-air injection on surface pressure and aerodynamic loss distribution of a linear turbine cascade 气体注射成型冷气喷射对直叶栅型面压力及气动损失分布影响的实验研究
The running property of the diesel engine mainly depends on many factors such as the intake air condition, compression ratio, valve timing, injection pressure, injection timing, and injection pattern, et al. 柴油机工作过程的组织,主要取决于进气的状态、压缩比以及由凸轮机构决定的配气定时、喷油压力、喷油定时和喷油模式等参数。
Analysis of the nozzle shape and size parameters on the nozzle internal flow field. ( 3) High-pressure air nozzle to spray the outside of the simulation process. Analysis of injection pressure and speed the process of change. 分析了喷嘴形状与尺寸参数对喷嘴的内部流场的影响。(3)通过对高压空气喷嘴的外部喷射过程的模拟仿真,分析喷射过程的压力和速度变化,分析喷嘴喷射流场的射流特性。