Flow control of the vortex shedding from a circular cylinder by asymmetrically arranged deflectors

被引：0
作者：
Department of Applied Physics, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki-shi. Miyazaki, 889-2192, Japan [1 ]
机构：
[1] Department of Applied Physics, University of Miyazaki, Miyazaki-shi. Miyazaki, 889-2192
来源：
Nihon Kikai Gakkai Ronbunshu, B | 2006年 / 3卷 / 604-611期
关键词：
Base Pressure; Circular Cylinder; Critical Gap; Flow Control; PIV; Splitter Plate; Strouhal Number; Vortex; Wake;
D O I：
10.1299/kikaib.72.604
中图分类号：
学科分类号：
摘要：
This paper deals with the flow around a circular cylinder with an element inserted in the wake. A long splitter plate (splitter-plate case) and a circular cylinder of equal diameter (two-cylinder case) were used as the element, Experiments were mainly conducted in a water tank at a Reynolds number of 7.4×103 for the two-cylinder case and 1.1×104 for the splitter-plate case. As the deflectors are horizontally traversed upstream, the base suction coefficient exhibits a critcal fall at a certain position. PIV measurements revealed suppression of regular vortex shedding at the critical positions in both cases and a similar behavior of vortex formation length in the vicinity of the positions.
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页码：604 / 611
页数：7
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