Abstract
Wind tunnel experiments were conducted to improve the performance of the magnetostrictive flow-induced vibrational power generator with a cantilevered V-shaped prism. Effects of the test models' cross-sectional height H and V-angle β on the response amplitude and power generation were investigated. The test model was made of PLA and CFRP. The V-shaped prism with β = 90° has a soft galloping vibration. The velocity at the onset of oscillation decreases with increasing β, but the test model for β = 150° does not vibrate. The torsional vibration of a V-shaped prism made of CFRP with a 45/-45 fiber orientation is smaller than with a 0/90 fiber orientation. Flow visualization by the smoke wire method reveals the relationship between vibration characteristics and flow structure around the test model. The power of the test model for β = 90° and H = 40 mm becomes larger at 1.6 mW compared to the other models.
