2関節イルカ形水中推進機構の動力学解析 : 第6報,線形理論で考慮できない効果の三次元パネル法による検証(流体工学,流体機械)

概要

論文の詳細を見る
In the preceding papers, we developed a linear theory for a two-joint dolphinlike propulsion mechanism, which was a simplified model of high speed swimming animals. However, the effect of the simplification implied in that theory has not been quantitatively discussed so far. To this end, in this paper, by using the three-dimensional panel method, the effects which authors' linear theory can not treat on propulsive characteristics are examined. First, we investigate the fluid force acting on the body part. It is found that the calculated values of the amplitude of the fluid force by the linear theory becomes 10 to 20% larger than those by the panel method, while the values of the phase of the fluid force by those two methods agree well. Next, we examined the effects of the presence of the body and the surging motion of the caudal fin on propulsive characteristics. It is found that the presence of the body makes the propulsive efficiency slightly lower and that the surging of the caudal fin produces higher thrust but lower propulsive efficiency.
一般社団法人日本機械学会の論文
2003-07-25