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15 February 2025
 
  » arxiv » 1109.0047

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Extensibility enables locomotion under isotropic drag
On Shun Pak ; Eric Lauga ;
Date 1 Sep 2011
AbstractAnisotropic viscous drag is usually believed to be a requirement for the low Reynolds number locomotion of slender bodies such as flagella and cilia. Here we show that locomotion under isotropic drag is possible for extensible slender bodies. After general considerations, a two-ring swimmer and a model dinoflagellate flagellum are studied analytically to illustrate how extensibility can be exploited for self-propulsion without drag anisotropy. This new degree of freedom could be useful for some complex swimmer geometries and locomotion in complex fluid environments where drag anisotropy is weak or even absent.
Source arXiv, 1109.0047
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