0519 流力振動発電用片持ち弾性支持柱状物体の振動特性に及ぼす迎え角の影響

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  • 0519 Effect of Angle of Attack on Transverse Vibration Characteristics of a Cantilevered Prism for Energy Harvest

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To develop the power generation system using iron-gallium alloy, we focus on transverse galloping for a rectangular prism with a critical depth section of less than the side ratio of 0.6, and a D-section (semi-circle) prism at a flow velocity lower than the resonant velocity. The purpose of the present study is to investigate the effects of the attack of angle on the transverse galloping vibration of a cantilevered prism and the performance of a power generator using an irongallium alloy as a magnetostrictive material and a cantilevered prism in a water tunnel. The effect of the attack of angle on the transverse vibration of D-section prism with the side ratio of 0.23 was smaller than the other prisms. The maximum electric power using iron-gallium alloy and a D-section prism with the side ratio of 0.23 was 26 mW at the reduced velocity of V_r = 4.15.

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