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Influence of caudal fin rigidity on swimmer propulsion efficiency

Michel Bergmann 1, 2 Angelo Iollo 1, 2 Rajat Mittal 3
2 MC2 - Modélisation, contrôle et calcul
CNRS - Centre National de la Recherche Scientifique : UMR5251, UB - Université de Bordeaux, Inria Bordeaux - Sud-Ouest
Abstract : A computational model is used to examine the effect of caudal fin flexibility on the propulsive efficiency of a self-propelled swimmer. The computational model couples a penalization method based Navier-Stokes solver with a simple model of flow induced deformation and self-propelled motion at an intermediate Reynolds number of about 1000. The results indicate that a significant increase in efficiency is possible by careful choice of caudal fin rigidity. The flow-physics underlying this observation is explained through the use of a simple hydrodynamic force model.
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https://hal.inria.fr/hal-00945912
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Submitted on : Thursday, February 13, 2014 - 1:30:11 PM
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Michel Bergmann, Angelo Iollo, Rajat Mittal. Influence of caudal fin rigidity on swimmer propulsion efficiency. [Research Report] RR-8475, INRIA. 2014, pp.20. ⟨hal-00945912⟩

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