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Effect of caudal fin flexibility on the propulsive efficiency of a fish-like swimmer

Michel Bergmann 1, 2 Angelo Iollo 1, 2 Rajat Mittal 3
2 MC2 - Modélisation, contrôle et calcul
Inria Bordeaux - Sud-Ouest, UB - Université de Bordeaux, CNRS - Centre National de la Recherche Scientifique : UMR5251
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 and guidelines for bioinspired designs of flexible fin propulsors are proposed.
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https://hal.inria.fr/hal-01059643
Contributor : Michel Bergmann Connect in order to contact the contributor
Submitted on : Monday, September 1, 2014 - 2:49:36 PM
Last modification on : Wednesday, February 2, 2022 - 3:53:28 PM

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  • HAL Id : hal-01059643, version 1

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Michel Bergmann, Angelo Iollo, Rajat Mittal. Effect of caudal fin flexibility on the propulsive efficiency of a fish-like swimmer. Bioinspiration and Biomimetics, IOP Publishing, 2014. ⟨hal-01059643⟩

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