The characteristic of this model is only to know basic and natural boundary condition, then the stream function and flow velocity required on the boundary are obtained.
这一模型的特点只需要知道边界上的基本边界条件和自然边界条件，就可以得到边界上所需要求的流函数和水流速度；
For potential flows on any stream surface, the equation of the velocity graph is set up by tensor analysis, and thus it provides an analytic method for solving some special flow problems.
本文利用张量分析工具，对任意流面上的位势流，建立速度图方程，为解决一些特殊流动问题，提供一个分析方法。
Uniform flow around a mounting cylinder is simulated with the application of FLUENT software while Reynolds number is 20, 40,100. Stream function and velocity vector distributions are indicated.
使用计算流体力学软件FLUENT，模拟均匀来流绕固定圆柱的流动，模拟雷诺数为20,40,100时的绕流流动，得到流场的流函数等值线图和速度矢量图。
The effects of curvature and torsion on secondary flow, isoline of stream function and distribution of the axial velocity of flow were discussed.
讨论了曲率和挠度对二次流动、流函数等值线和轴向速度的影响，研究了不同曲率和挠度螺旋管道内流量与压力梯度之间的关系。
The effective shear stress not only generalizes the flow intensity but also summarizes the flow intensities of mean flow velocity, stream power and unit stream power.
这一有效切应力不但是对切应力类水流强度指标的总结，还可以概括平均流速和水流功率等水流强度指标。
Swirlmeter is a new kind of velocity flow meter which has been widely used in industry for gas and stream flow measurement.
旋进旋涡流量计是一种新型的速度式流量计，已广泛应用于工业现场中的气体、蒸汽的流量测量。
The movement and diffusion process of pollutants in current of water are affected by water temperature, local flow velocity and direction, stream shape, and so on.
由于污染物在水流中的扩散迁移过程受水温、局部流速与流向、河道形状等因素的影响。
Both the flow velocity and the unit stream energy are the indexes to evaluate the degree of difficulty for the river closure.
龙口流速和单宽功率是衡量截流困难度的两个重要指标，了解其变化规律对截流设计和施工都有极大的意义。
The results of preliminary experiments show that the distribution of stream-wise particle velocity follows the log-law, and the particle velocity is lower than the corresponding clean water flow.
试验可以得出颗粒三维运动的瞬时速度，初步试验得出颗粒的纵向平均速度遵循对数分布，颗粒速度小于相应水流的运动速度。
Also the stream function and flow velocity of the internal points, and the distribution of velocity and pressure on the spillway are got.
进而也可以得到内点的流函数及流速分布；并得到壁面上的压力分布。
Also the stream function and flow velocity of the internal points, and the distribution of velocity and pressure on the spillway are got.
进而也可以得到内点的流函数及流速分布；并得到壁面上的压力分布。
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