クロスフロー振動する矩形柱の流力振動応答特性とその制御に関する研究(J13-7 渦励振I,J13 流体関連の騒音と振動)

概要

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This study was to experimentally investigate response characteristics and suppression of flow-induced vibrations of rectangular prisms with various width-to-height ratios. The present study focused cross-flow vibration of the rectangular prisms, which is one of flow-induced vibrations generated in the rectangular prisms. The main findings were that (i) the response characteristics of flow-induced vibrations could be classified into five patterns depending on the width-to-height ratio (ii) There are three types of flow-induced vibrations of prism in the normal direction to the flow and these are low-speed galloping, vortex excitation and high-speed galloping (iii) Low-speed galloping and vortex excitation can be suppressed by increasing the value of mass-damping parameter Cn and high-speed galloping can be suppressed by the semicircle fairings attached on front and rear surface of the prism.
一般社団法人日本機械学会の論文
2004-09-04