一様流により励起される正方形断面柱の振動に及ぼす十字交差配置下流平板の影響(J13-7 渦励振I,J13 流体関連の騒音と振動)

概要

論文の詳細を見る
Influence of the crisscross-arrangement downstream plate on the Karman vortex excitation and the galloping of a square section cylinder was investigated by wind tunnel experiment. When the width w of the downstream plate is equal to the side d of square cylinder, the Karman vortex excitation is effectively suppressed in the range of gap-to-diameter ratio s/d < 1.6, while narrower plates can enhance it. The suppression effect on the galloping of the downstream plate is more remarkable in comparison with that on the Karman vortex excitation, except that a new oscillation is induced around s/d〜1. The mechanism of the newly induced oscillation is considered to be different between the cases of w/d = 1 and w/d < 0.7.
一般社団法人日本機械学会の論文
2004-09-04