The observed motion of a sphere through a short, rotating cylinder of fluid
The observed motion of a sphere through a short, rotating cylinder of fluid
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观察到的球体通过短的旋转流体圆柱体的运动
DOI：
10.1017/s0022112068000388
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发表时间：
1968
影响因子：
3.7
通讯作者：
T. Maxworthy
中科院分区：
文献类型：
--
作者：
T. Maxworthy
当球体通过一个旋转的圆柱体中含有的略带粘性的流体时，球体上的阻力被测量到，与球体运动产生的泰勒柱的长度相比，旋转圆柱体的长度较短。这些结果表明，只有当惯性效应远小于粘性力和科里奥利力时，才能接近Moore&Saffman(1968)的结果。流场观测显示，与他们论文中描述的许多特征定性一致，但有足够的不同，值得进一步进行相当广泛的讨论。这些差异的特征是剪切层和边界层流动在本研究涵盖的所有参数值中都具有明显的前后不对称性。
The drag on a sphere has been measured as it moves through a slightly viscous fluid contained in a rotating cylinder that is short compared to the length of ‘Taylor columns’ created by the sphere motion. These results suggest that only when inertia effects are very much smaller than both viscous and Coriolis forces are the results of Moore & Saffman (1968) approached. Flow field observations show qualitative agreement with many of the features described in their paper but differ sufficiently to warrant a further, fairly extensive discussion. These differences are characterized by a marked fore and aft asymmetry in the shear layer and boundary-layer flows for all values of the parameters covered by this study.