文章基本信息

标题：Numerical Simulation of a Multi-Body System Mimicking Coupled Active and Passive Movements of Fish Swimming
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作者：Jianxin Hu ; Qing Xiao ; Ruoxin Li 等
期刊名称：Journal of Marine Science and Engineering
电子版ISSN：2077-1312
出版年度：2021
卷号：9
期号：3
页码：334
DOI：10.3390/jmse9030334
语种：English
出版社：MDPI AG
摘要：A multi-body system model is proposed for the mimicking of swimming fish with coupled active and passive movements. The relevant algorithms of the kinematics and dynamics of the multi-body system and coupled fluid solver are developed and fully validated. A simplified three-body model is applied for the investigation of the hydrodynamic performance of both an active pitch motion and passive movement. In general, there is an optimal stiffness, under which the model swims with the fastest velocity. The effect of the damper can be drawn only when the stiffness is small. Comparing with the rigid tail, the flexible tail leads to a faster speed when the stiffness and damping coefficients are in a suitable range.