510 回転振動する矩形柱の流力振動現象の発現機構に関する研究(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
In this study, the generation mechanism of flow-induced vibration of rectangular prisms with rotary oscillation was experimentally investigated. The present study focused on rotary oscillation, one of the three types of flow-induced vibration generated in a prism. The vortex shedding pattern of a prism can be classified into three patterns by change of the width-to-height ratio. The rectangular prisms having width-to-height ratio of B/H=1.0 and B/H=3.0 are adopted. The main findings were that (i) there are three types of flow-induced vibration, i.e., vortex excitation, low-speed and high-speed torsional flutter, (ii) the flow-induced vibration occurs due to change in fluctuating pressure on the surface of the prism based on the difference of rolling-up of the shear layer separating from the leading edge of the prism.
一般社団法人日本機械学会の論文
2001-09-25