Abstract
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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