Cormorant Webbed-feet Support Water-surface Takeoff:Quantitative Analysis via CFD

Jinguo Huang; Jianhong Liang; Xingbang Yang; Hongyu Chen; Tianmiao Wang

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Cormorant Webbed-feet Support Water-surface Takeoff:Quantitative Analysis via CFD

机译：鸬鹚蹼脚支持水面起飞：通过CFD定量分析

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The bio-inspired aerial–aquatic vehicle off ers attractive perspectives for future intelligent robotic systems.Cormorant’s webbed-feet support water-surface takeoff is a typical locomotion pattern of amphibious water birds,but its highly maneuverable and agile kinetic behaviors are inconvenient to measure directly and challenging to calculate convergently.This paper presents a numerical Computational Fluid Dynamic(CFD)technique to simulate and reproduce the cormorant's surface takeoff process by modeling the three-dimensional biomimetic cormorant.Quantitative numerical analysis of the fluid flows and hydrodynamic forces around a cormorant’s webbed feet,body,and wings are conducted,which are consistent with experimental results and theoretical verification.The results show that the webbed feet indeed produced a large majority of the takeoff power during the initial takeoff stage.Prior lift and greater angle of attack are generated to bring the body off the water as soon as possible.With the discussion of the mechanism of the cormorant’s water-surface takeoff and the relevant characteristics of biology,the impetus and attitude adjustment strategies of the aerial–aquatic vehicle in the takeoff process are illustrated.

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《仿生工程学报（英文版）》 |2021年第5期|1086-1100|共15页
作者
Jinguo Huang; Jianhong Liang; Xingbang Yang; Hongyu Chen; Tianmiao Wang;
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作者单位

Robotics Institute Beihang University Beijing 100083 China;

Institute of Micro Technology and Medical Device Technology Technical University of Munich 85748 Garching Germany;

Robotics Institute Beihang University Beijing 100083 China;

Media Lab Massachusetts Institute of Technology Cambridge MA 02139-4307 USA;

Robotics Institute Beihang University Beijing 100083 China;

Robotics Institute Beihang University Beijing 100083 China;

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Cormorant Webbed-feet Support Water-surface Takeoff:Quantitative Analysis via CFD

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