When the axial velocity of the electron stream is equal to the threshold velocity, the angular velocities of two electron stream are equal, and the electrostatic wave is stable. 当轴向速度等于临界值时,两个电子流旋转速度相等,电子静电波是稳定的。
The turbulent flow field in the horizontal well completed with perforation was simulated by solving the N-S equations. The effects of injection ratio on pressure drop and the mechanism of mixing pressure drop were studied by the analysis of axial pressure drop and three dimensional stream lines. 采用定常湍流N-S方程,数值模拟了水平井筒湍流变质量流场,通过分析轴线压降和孔眼附近三维流线图,研究注入比对水平井筒压降的影响规律及混合压降产生的机理。
A new hydraulic design method and the numerical method of axial flow pump impeller are introduced. The integral equation for flow calculation of S1 stream surface of impeller is derived. 介绍了一种新的轴流泵叶轮的水力设计方法,推导了求解叶轮S1流面流动的积分方程。
And compared the outlet pressure and flow and the plunger pressure and flow impact on the axial piston pump of series three with the stream window and parallel three with the stream window. 并且对串联型三配流窗口轴向柱塞泵和并联型三配流窗口轴向柱塞泵出口的压力流量和柱塞腔内的压力流量冲击经行了比较。
Then analysised the scope of application of two new pump. The range of applications of the axial piston pump of the parallel three with the stream window is wide than the series. 分析两种新型泵的应用范围,得出并联型三配流窗口轴向柱塞泵的应用范围要广于串联型三配流窗口轴向柱塞泵的应用范围。