中文摘要：

分析表达式为没有它的表格的变化，一致地并且坚硬地搬到一个圆柱的试管的双旋涡细丝导致的 inviscid 流动领域被推出，在旋涡细丝旋转在附近的地方它的与经常的尖速度轴并且翻译它的与经常的 transferal 速度轴。它是解决问题和旋涡细丝运动，相对速度领域在并且与螺旋状的对称被假定时间无关并且与螺旋状的对称建立一个动人的圆柱的坐标系统的一把钥匙。绝对速度地和压力回答的结果表演都是时间周期的功能，并且当螺旋状的旋涡细丝自己沿着细丝滑倒时，可以堕落进一块时间无关的地或是不动的。在管子墙上的压力山峰和山谷的地点的计算结果与试验性的结果是一致的。当圆柱的管子半径趋于到无穷地大的数量时，双螺旋状的旋涡细丝在一个未装订的空格导致流动地，这也被结束。关键词分析答案 - 动人的双螺旋状的旋涡 - 时间依赖者流动地 - 打漩中国(资助号码 50075029 ) 的国家自然科学基础支持的流动 MSC 2000 76B47 工程

英文摘要：

The analytical expressions was deduced for the inviscid flow field induced by the double vortex filaments that move uniformly and rigidly without change of its form in a cylindrical tube, where the vortex filaments rotate around its axial with a constant angular velocity and translates along its axial with a constant transferal velocity. It is a key of solving problem to set up a moving cylindrical coordinate system together with the vortex filaments motion, in which the relative velocity field is presumed to be time-independent and with helical symmetry. The result shows that the absolute velocity field and pressure field are all time-periodic functions, and may degenerate into a time-independent field when the helical vortex filaments slip along the filaments themselves or is immobile. The calculation results at the location of pressure peaks and valleys on pipe wall are accordant with experimental results. When the cylindrical pipe radius tends to infinitely large quantity, it is also concluded that the double helical vortex filaments induce flow field in an unbound space.