G401 主流に周期的な乱れを導入した場合の円桂の流体関連振動(2)(GS-4-1 飛翔体,円柱,一般セッション)

Abstract

Wind tunnel experiments were conducted to investigate the flow-induced vibrations of a flexibly-mounted rigid cylinder in the free stream exposed to local and periodic turbulence. The turbulence was introduced by a slender rod forced to oscillate in the transverse flow direction upstream of the test cylinder. Results show that the amplitude of the test cylinder increased remarkably as the reduced velocity increased, when the velocity fluctuation with the frequency close to the natural frequency of the test cylinder was introduced to the free stream.