Numerical Study of an Oscillating Smaller Cylinder in the Wake of an Upstream Larger Cylinder

被引：0

作者：

TAN Soon Keat ^{[1
,2
]}

机构：

[1] Maritime Research Centre, School of Civil and Environmental Engineering, Nanyang Technological University

[2] Nanyang Environmental and Water Research Institute, Nanyang Technological University

来源：

Journal of Ocean University of China | 2012年 / 11卷 / 02期

关键词：

tandem cylinders with unequal diameters; numerical simulation; gap ratio; vibration amplitude;

D O I：

暂无

中图分类号：

TB533 [振动与噪声的发生];

学科分类号：

083002 ; 120402 ;

摘要：

A numerical study of flow around two tandem cylinders with unequal diameters was carried out. The upstream larger cylinder was fixed and the downstream smaller cylinder was allowed to oscillate in the transverse direction only. Comparisons of the experimental and numerical results were made to investigate the effects of the gap ratio on the maximum vibration amplitude and vortex shedding frequency. The results showed that the vibration response of the smaller cylinder was significantly affected by the presence of the upstream larger cylinder, and resulted in greatly reduced vibration amplitudes. With an increasing gap ratio, the vibration amplitude increased. However, the magnitude was lower than that corresponding to a single cylinder (with the same diameter as that of the downstream smaller cylinder) under the same flow conditions.

引用

页码：111 / 117

页数：7

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