摘要
本文运用三维波动柔板位流模型与最佳游动方式理论,继续分析了新月形鱼尾的推进性能,从而实现了对鱼类三种主要推进模式的较为系统的研究。理论分析表明,高速海洋动物所具有的大展弦比、尖叶梢、中等后掠的新月形尾能获得接近于最佳的推进性能。对海豚游动特性的理论估算也给出了令人满意的结果。
This paper uses the three-dimensional waving plate model and optimummotion theory to analyse lunate-tail swimming propulsion, and so a comparatively systmatic study of the three classes of fish propulsive modes has been carried out. Theoretical results show that lunate-tail, with high-aspect-ratio, spanwise tapering tip and moderate sweepback angle, of many fast-swimming ocean animals, may gain the nearly best propulsive characteristics. Estimation of a porpoise swimming performance gives satisfactory results.
出处
《力学学报》
EI
CSCD
北大核心
1992年第4期458-465,共8页
Chinese Journal of Theoretical and Applied Mechanics
关键词
游动
推进
生物力学
尾鳍
流体力学
swimming, propulsion, biomechanics, unsteady flow
