K-1227 回流水槽における円柱構造物の流れ方向流力振動(J06-1 流体関連の騒音と振動(1))(J06 流体関連の騒音と振動)

概要

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Flow-induced in-line oscillation of a circular cylinder has been experimentally studied by free-oscillation tests in a water tunnel. By employing two kinds of test models made of stainless steel and duralumin, there is no difference in the response amplitude curves against the reduced mass-dumping parameters. In the free-oscillation tests, the cylinder models were spring-mounted so as to oscillate as a 2-dimensional rigid cylinder in the water tunnel. Two types of excitation phenomena appear at approximately one half of the resonance flow velocity. A hysteresis phenomenon is found to appear in the in-line oscillation. A splitter plate was inserted behind the cylinder to investigate there relationship between the cylinder oscillation and wake structure.
社団法人日本機械学会の論文
2001-08-22