Steady streaming around a cylinder pair
Steady streaming around a cylinder pair
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围绕一对气缸稳定流动
DOI：
10.1098/rspa.2016.0522
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
W. Coenen
中科院分区：
文献类型：
--
作者：
W. Coenen
研究了小振幅振荡流中一对圆柱体的定常流动问题。当圆柱体表面的斯托克斯层厚度远小于圆柱体半径，且流动雷诺数大于或等于数量级时，本文的研究重点放在了这种情况下。在这种情况下，持续在Stokes层边缘的稳定流动速度可以作为边界条件来数值求解它在流体主体中驱动的外部流动运动。研究了柱间间隙宽度和流动雷诺数对流动拓扑的影响。将计算结果与实验观测结果进行了比较。
The steady streaming motion that appears around a pair of circular cylinders placed in a small-amplitude oscillatory flow is considered. Attention is focused on the case where the Stokes layer thickness at the surface of the cylinders is much smaller than the cylinder radius, and the streaming Reynolds number is of order unity or larger. In that case, the steady streaming velocity that persists at the edge of the Stokes layer can be imposed as a boundary condition to numerically solve the outer streaming motion that it drives in the bulk of the fluid. It is investigated how the gap width between the cylinders and the streaming Reynolds number affect the flow topology. The results are compared against experimental observations.