流れのパッシブ制御による矩形断面柱の流体力の抑制 : 第2報, 完全はく離形角柱の場合〔流体工学, 流体機械〕

概要

論文の詳細を見る
Objective of the present study is to investigate the suppression of the fluid forces acting on rectangular cylinders by passive control of flow around it. The width-to-height ratio B/H of the section is varied from 0.3 to 2.0. Flow control is established by introducing a fine flat plate in the upstream of rectangular cylinder. Measurements are carried out to change systematically the position of the plate, and then the steady and unsteady fluid forces are examined to estimate the magnitude of the reduction themselves. Also, such matters as the mechanism of the flow control, the structure of the controlled wake and the behavior of the separated shear layer are investigated. As a result, it is found that the steady and unsteady fluid forces and vortex shedding of the rectangular cylinders with aspect ratio B/H beyond 0.5 can be substantially suppressed using a flat plate with a width of one tenth of the cylinder height.
一般社団法人日本機械学会の論文
1998-06-25