フィンまたはリブ付き円柱を用いた磁歪式流力振動発電デバイスの性能に関する研究

抄録

The present paper describes the development of the magnetostrictive flow-induced vibrational power generator using a circular cylinder. Effects of a fin plate behind a cylinder and ribs on the side surface of a cylinder on the vibrational characteristics and the power generation of its generator were investigated by the wind tunnel test. The fin height L_f was changed from 0.25L, 0.5L, 0.75L, to 1L, and the rib height W_r was also changed from 1, 2, 4, 6, to 10 mm. The vibration for circular cylinders with a fin plate of L_f/L = 0.75 and 1 begins from Vr = 7. The vibration ceases at Vr > 14. Although the reduced velocity region for vibration increases more than without a fin plate, the maximum amplitude decreases less than without a fin plate. The onset velocity for a circular cylinder with ribs is Vr = 3.6. Although the reduced velocity region for vibration does not increase more than without ribs, the power generation for a circular cylinder with ribs of W_r ≥ 6 mm increases more than without ribs.