Force scaling and efficiency of elongated median fin propulsion
Force scaling and efficiency of elongated median fin propulsion
复制标题
拉长中鳍推进力的缩放和效率
DOI：
10.1088/1748-3190/ac6375
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发表时间：
2022
影响因子：
3.4
通讯作者：
Curet, Oscar M
中科院分区：
文献类型：
--
作者：
Uddin, Mohammad I;Garcia, Gonzalo A;Curet, Oscar M
几种鱼通过波浪形的细长的中鳍游泳，而身体大多保持笔直，使它们能够进行向前和定向的机动。我们使用具有类似鳍推进的机器人船来确定推力缩放和效率。使用精确的力和游泳运动学测量与机器人船，由起伏的鳍产生的推力被发现与自由流动的流和波的速度之间的相对速度的平方成比例。一个水动力效率的基础上提出的推进力测量和建模所需的动力振荡鳍横向。结果发现，推进效率与游泳速度具有广泛的高性能，最大效率为75%。本文提出了一个计算航速与波浪速度的关系式，它取决于两个参数：体前面积与鳍后掠面积之比（Ap/Ae）和体阻力与鳍推力系数之比（CD/Cx）。计算推进力和自由泳速度的模型与实验结果进行了比较。更广泛的影响，这些结果进行了讨论的形态和功能的起伏鳍游泳者。特别是，我们认为，在自然游泳者中发现的鳍和身体高度的比例可能是由于游泳效率和游泳速度之间的权衡。
Several fishes swim by undulating a thin and elongated median fin while the body is mostly kept straight, allowing them to perform forward and directional maneuvers. We used a robotic vessel with similar fin propulsion to determine the thrust scaling and efficiency. Using precise force and swimming kinematics measurements with the robotic vessel, the thrust generated by the undulating fin was found to scale with the square of the relative velocity between the free streaming flow and the wave speed. A hydrodynamic efficiency is presented based on propulsive force measurements and modelling of the power required to oscillate the fin laterally. It was found that the propulsive efficiency has a broadly high performance versus swimming speed, with a maximum efficiency of 75%. An expression to calculate the swimming speed over wave speed was found to depend on two parameters: A p/A e (ratio between body frontal area to fin swept area) and C D/C x (ratio of body drag to fin thrust coefficient). The models used to calculate propulsive force and free-swimming speed were compared with experimental results. The broader impacts of these results are discussed in relation to morphology and the function of undulating fin swimmers. In particular, we suggest that the ratio of fin and body height found in natural swimmers could be due to a trade-off between swimming efficiency and swimming speed.
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影响因子：
3.7
作者：
F. Ayancik;Q. Zhong;D. Quinn;Aaron Brandes;H. Bart-Smith;K. Moored
通讯作者：
F. Ayancik;Q. Zhong;D. Quinn;Aaron Brandes;H. Bart-Smith;K. Moored
DOI：
10.1109/oceans.2018.8604543
发表时间：
2018-10
期刊：
OCEANS 2018 MTS/IEEE Charleston
影响因子：
--
作者：
M. Irfan Uddin;O. Curet
通讯作者：
M. Irfan Uddin;O. Curet
影响因子：
3.4
作者：
English, Ian;Liu, Hanlin;Curet, Oscar M.
通讯作者：
Curet, Oscar M.
影响因子：
3.4
作者：
Liu, Hanlin;Curet, Oscar
通讯作者：
Curet, Oscar
使用仿生机器人船舶释放波状鳍推进的潜力
影响因子：
0.8
作者：
Hanlin Liu;Fuxian Gong;O. Curet
通讯作者：
O. Curet