中文摘要：

在水力的吸入的垂直旋涡流动的踪迹具有形状 ofspiral 线，它与 tracer 技术在介绍实验被观察。Itrepresents 从水表面的液体粒子流动成螺旋形到在水下并且 rotatearound 旋涡轴多周期。这个过程类似于螺丝钉的运动。到在 axisymmetric 条件下面的 describethe 多圆螺线特征，不仅在光线的方向而且在轴的方向的垂直旋涡 wouldchange。为垂直旋涡流动的改进公式 forthree 速度部件被在这篇文章使用变量的方法 ofseparation 推出。在改进公式，速度部件是光线、轴的坐标的 thefunctions，因此垂直 vortexcould 的多圆螺线流动被模仿。垂直旋涡流动的计算、测量的结果是 comparedand 错误的原因被分析。

英文摘要：

The trace of vertical vortex flow at hydraulic intakes is of the shape of spiral lines, which was observed in the presented experiments with the tracer technique. It represents the fluid particles flow spirally from the water surface to the underwater and rotate around the vortex-axis multi-cycle. This process is similar to the movement of screw. To describe the multi-circle spiral characteristics under the axisymmetric condition, the vertical vortex would change not only in the radial direction but also in the axial direction. The improved formulae for three velocity components for the vertical vortex flow were deduced by using the method of separation of variables in this article. In the improved formulae, the velocity components are the functions of the radial and axial coordinates, so the multi-circle spiral flow of vertical vortex could be simulated. The calculated and measured results for the vertical vortex flow were compared and the causes of errors were analyzed.