拍打
推力
推进
逐渐变细
推进效率
运动学
机械
刚度
抗弯刚度
弯曲
流量(数学)
唤醒
涡度
物理
涡流
结构工程
航空航天工程
工程类
翼
计算机科学
经典力学
计算机图形学(图像)
作者
Pierre Leroy-Calatayud,Matteo Pezzulla,Armelle Keiser,Karen Mülleners,Pedro M. Reis
出处
期刊:Physical review fluids
[American Physical Society]
日期:2022-07-27
卷期号:7 (7)
被引量:10
标识
DOI:10.1103/physrevfluids.7.074403
摘要
Structural flexibility, a common feature of fish fins and insect wings, tends to increase propulsion performance compared to equivalent rigid systems in terms of thrust production and efficiency. Most past studies have focused on propulsors with uniform bending stiffness. This study investigates tapered flapping foils subjected to a heaving motion in a quiescent viscous fluid to evaluate the effect of thickness tapering on the hydrodynamic performance of the foils. The experimental results demonstrate that tapered stiffness distributions robustly enhance propulsive performance, associated with stronger vorticity and a downstream-favored orientation of the produced flow.
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