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

被引：32
|
作者：
Bergmann, M. [1 ,2 ]
Iollo, A. [1 ,2 ]
Mittal, R. [3 ]
机构：
[1] Inria, F-33400 Talence, France
[2] Univ Bordeaux, IMB, UMR 5251, F-33400 Talence, France
[3] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA
来源：
BIOINSPIRATION & BIOMIMETICS | 2014年 / 9卷 / 04期
关键词：
propulsive efficiency; fish-like swimming; computational model; IMMERSED BOUNDARY METHOD; HYDRODYNAMICS; PERFORMANCE; SIMULATION; FLIGHT; FLUID; WAKE;
D O I：
10.1088/1748-3182/9/4/046001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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页数：12
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