Control of laminar vortex shedding behind a circular cylinder using tabs

被引：0
作者：
Jeeun Yoon
Jungwoo Kim
Haecheon Choi
机构：
[1] Seoul National University,Department of Mechanical & Aerospace Engineering
[2] Seoul National University of Science & Technology,Department of Mechanical System Design Engineering
[3] Seoul National University,Institute of Advanced Machinery and Design
来源：
Journal of Mechanical Science and Technology | 2014年 / 28卷
关键词：
Vortex shedding; Tabs; Drag reduction; Flow control; Bluff body;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Small, thin flat plates (called tabs hereafter) are attached to the upper and lower surfaces of a circular cylinder to control vortex shedding and reduce the mean drag and lift fluctuations at the Reynolds number of 100. We vary the location and size of the tabs and the distance between the adjacent tabs. The maximum amount of drag reduction by the tabs is 17%. It is found that the tabs perturb twodimensional vortex shedding and introduce spanwise mismatch of vortex shedding, which weakens the strength of vortex shedding or even annihilates vortex shedding. The present result suggests that these tabs are an effective passive device for the control of vortex shedding behind two-dimensional bluff bodies.
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页码：1721 / 1725
页数：4
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