Influence of a walking mechanism on the hydrodynamic performance of a high-speed wheeled amphibious vehicle
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Published:2023-07-18
Issue:2
Volume:14
Page:277-292
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ISSN:2191-916X
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Container-title:Mechanical Sciences
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language:en
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Short-container-title:Mech. Sci.
Author:
Xu Haijun,Xu Liyang,Feng Yikun,Xu Xiaojun,Jiang Yue,Gao Xue
Abstract
Abstract. In order to reduce the resistance and increase speed for
a high-speed wheeled amphibious vehicle, a wheel-retracting mechanism was
applied to a walking mechanism and the influence was researched. Firstly, to
obtain a reliable numerical method, a realizable shear stress transport (SST) k-ω turbulence
model and computational fluid dynamic (CFD) model built by an overset mesh technique was used and compared
with the corresponding model tests. Secondly, the effect of the wheels' flip
angle on resistance, heave and pitch was investigated. Then, the wheel well
was optimized by numerical simulation. Finally, the results showed that the
influence of the wheels on resistance was more significant, and the larger
the wheels' flip angle was, the more significant the resistance reduction
would be. An optimized wheel well was beneficial to resistance reduction.
Furthermore, the running attitude became steadier, thereby decreasing the
heave and pitch.
Publisher
Copernicus GmbH
Subject
Industrial and Manufacturing Engineering,Fluid Flow and Transfer Processes,Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering,Control and Systems Engineering
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