Bergmann M, Iollo A, Mittal R
Inria, F-33400 Talence, France. University of Bordeaux, IMB, UMR 5251, F-33400 Talence, France.
Bioinspir Biomim. 2014 Sep 25;9(4):046001. doi: 10.1088/1748-3182/9/4/046001.
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.
一个计算模型被用于研究尾鳍灵活性对自推进式游泳者推进效率的影响。该计算模型将基于惩罚方法的纳维-斯托克斯求解器与一个关于流动诱导变形和在大约1000的中间雷诺数下的自推进运动的简单模型相结合。结果表明，通过谨慎选择尾鳍刚度，效率有可能显著提高。通过使用一个简单的水动力模型来解释这一观察结果背后的流动物理，并提出了用于柔性鳍推进器的仿生设计的指导方针。
