Geometry of Streamlines in Fluid Flow Theory
Geometry of Streamlines in Fluid Flow Theory
复制标题
流体流动理论中的流线几何
DOI：
10.14429/dsj.28.6710
复制
发表时间：
2014
影响因子：
0.9
通讯作者：
P. Rao
中科院分区：
文献类型：
--
作者：
P. Rao
本文利用由流线s线、s线的渐开线n线和s线的球面曲率中心轨迹B线组成的非完整坐标系，研究了流线的内禀性质。这引起只有两个几何参数和有趣的已经获得。它还表明，速度可以表示的几何参数。沿副法线速度沿着恒定意味着运动的块曲面的存在。除非是平面运动，否则它不是无旋的。在广义螺旋运动中，发现wn/v=沿流线的沿着常数。
Intrinsic properties of lines of flow has been studied by employing anholonomic co ordinate system consisting of s-lines which are streamlines, n-lines the involutes of s-lines and b- lines the locus of centre of spherical curvature of s-lines. This gives rise to only two geometric parameters and interesting have been obtained. It was also shown that velocity can be expressed in terms of geometric parameters. Constancy of velocity along binormal line implies existence of Lump surface for the motion. It is found is not irrotational unless it is plane motion. In generalised screw motion it is found that wn/v=constant along the stream line.