| 1. | The flux through the wall of the vortex tube is zero by its definition .
根据涡管定义，穿过涡管管壁的涡量为零。 |
| 2. | Buoyancy instability ; neutral curve ; vortex wave ; eigenmode
浮力不稳定性中性曲线涡量波特征振型 |
| 3. | The characteristics of vortex field can be described visually by vortex line
涡量场特性可以用涡线非常形象地表达出来。 |
| 4. | The local nonlinear advection increases evidently the inward - propagation of vorticity , and therefore strengthens the typhoon obviously
局域非线性平流使内传的涡量明显增多，台风明显加强。 |
| 5. | At the same time , contour stream line , vortex , kinetic energy which are computed are important to investigate complex flow and turbulent flow
同时得到其它的参数如涡量场、等流函数线、紊动能等，这些参数对复杂流动和湍流有重要的研究意义。 |
| 6. | The in of nonlinear advection into the model weakens the intensity of both inward and outward propagation of vorticity , but makes the inward propagation up to a posi
非线性平流的引进，使涡量向内区传输以及向外传输的强度均减弱：但内传的涡量更加接近于台风中心。 |
| 7. | Then the two orientation states of fibres and three closure approximations are examined . analyses of fibre orientation and vorticity in the suspension can be contacted by stress features
另外比较纤维的平面与三维取向状态、三种封闭格式对稳定性的影响，通过应力将纤维取向分析同流场涡量分析联系起来。 |
| 8. | Finally , the mechanisms behind the instability of fibre suspensions are presented from a point of view of vorticity . effects of fibres are investigated through equations of vorticity transport and enstrophy balance
从涡量的角度分析纤维改变悬浮流动稳定性的机理，利用涡量输运方程与涡能平衡方程分析纤维的作用。 |
| 9. | 5 . the numerical simulation of the axial vortex movement in the inlet side of the pump system with the method of discrete vortex provided a new way for hydromechanical characteristics of a pump system
用离散涡方法计算涡系位置的演化模拟泵入口侧涡量场的轴向涡流运动，为研究泵系统入流侧涡量场特性提供了一种定量研究方法。 |
| 10. | L . the experiment measured the flow field of pump inlet by seven - hole cone probes under two kinds of flux , and gained pressure and speed distribution in this field , then obtained the rule of vortex field distribution
采用七孔测针对两种流量下泵入口流场进行了测量，得出了流场的压力和速度分布，在此基础上，拟合出了涡量场分布规律。 2 |
