A Study of Lift Force and Instantaneous Velocity Field Around an Oscillating Circular Cylinder

被引：0
|
作者：
C.A.Greated
机构：
[1] Department of Physics and Astronomy
[2] University of Edinburgh King’s Building Edinburgh EH9 3JZ.U.K. Professor
来源：
China Ocean Engineering | 1997年 / 04期
基金：
美国国家科学基金会;
关键词：
particle image velocimetry; oscillatory flow; single circular cylinder; force measurement; lift force; velocity field; vortex pattern; vorticity;
D O I：
暂无
中图分类号：
TV131 [水力理论、计算、实验];
学科分类号：
摘要：
-Force measurements of oscillatory flow acting on a single circular cylinder have been carriedout.The experiments were done by oscillating a circular cylinder in still water.Instantaneous forces and ve-locity fields around the cylinder were measured by Particle Image Velocimetry(PIV).The Keulegan-Car-penter number(KC)varied in the range from 5 to 20 and the viscous parameter β=Re/KC was set at500(Re is Reynolds number).It was found that the strength and frequency of the lift force increased withKC number,the main frequency of the lift force being three times the frequency of the oscillatory flow atKC=20.The movement and strength of the vortices around the cylinder are discussed for differentKC numbers.
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页码：419 / 430
页数：12
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