509 流れのパッシブ制御による円柱の流体力の抑制(OS4-2 流体における新技術開発-2)(OS4 流体における新技術開発)

概要

論文の詳細を見る
The objective of the present study was to investigate the suppression of the fluid forces acting on a circular cylinder by passive control of the flow. The flow control was established by introducing a fine flat plate at the upstream of the circular cylinder. Measurements were carried out by varying the position and width of the flat plate. The time-averaged and fluctuating fluid forces, vortex shedding frequency and flow patterns were systematically examined. Furthermore, such matters as the controlled fluid forces and the behaviour of the flow were discussed in detail. It was found the maximum reduction of the time-averaged drag was 58%, and maximum reduction in the fluctuating lift and drag were 61% and 46%, respectively by using the flat plate with the width of 5mm, which is considerably smaller compared to the circular cylinder with the diameter of 49mm.
一般社団法人日本機械学会の論文
2001-09-25