千鳥状に配置された魚型推進機構に関する実験的研究

-三台のヒレ型推進機が作り出す流れ場と推力の関係-

抄録

Three oscillating fin propulsors connected in parallel and staggered was investigated to aim an environment friendly and energy saving propulsor. In this study, propulsive speed and thrust forces were investigated. In addition, two dimensional flow structures behind the propulsors obtained by PIV technique were evaluated. As the result, staggered fin setting (front: 1, rear: 2) generate high propulsive performance. PIV detected flow pattern indicates a jet like flow pattern on staggered two and three fin settings. These jet-like flow patterns suggest existence of dominant flow patterns providing high thrust force with low power relative to conventional fin propulsors.