Swimmer-Types of Optimum Surface-Driven Active Particles
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910634787995648 |
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| author | Zayed, Rafe Md Abu Ardekani, Arezoo M. Nourhani, Amir |
| author_facet | Zayed, Rafe Md Abu Ardekani, Arezoo M. Nourhani, Amir |
| contents | An optimal microswimmer with a given geometry has a surface velocity profile that minimizes energy dissipation for a given swimming speed. An axisymmetric swimmer can be puller-, pusher-, or neutral-type depending on the sign of the stresslet strength. We numerically investigate the type of optimal surface-driven active microswimmers using a minimum dissipation theorem for optimum microswimmers. We examine the hydrodynamic resistance and stresslet strength with nonlinear dependence on various deformation modes. The results show that microswimmers with fore-and-aft symmetry exhibit neutral-type behavior, while asymmetrical geometries exhibit pusher-, puller-type or neutral-type behavior, depending on the dominant deformation mode and the nonlinear dependence of the stresslet for an optimum microswimmer on deformation mode and amplitude. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_04100 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Swimmer-Types of Optimum Surface-Driven Active Particles Zayed, Rafe Md Abu Ardekani, Arezoo M. Nourhani, Amir Fluid Dynamics Soft Condensed Matter An optimal microswimmer with a given geometry has a surface velocity profile that minimizes energy dissipation for a given swimming speed. An axisymmetric swimmer can be puller-, pusher-, or neutral-type depending on the sign of the stresslet strength. We numerically investigate the type of optimal surface-driven active microswimmers using a minimum dissipation theorem for optimum microswimmers. We examine the hydrodynamic resistance and stresslet strength with nonlinear dependence on various deformation modes. The results show that microswimmers with fore-and-aft symmetry exhibit neutral-type behavior, while asymmetrical geometries exhibit pusher-, puller-type or neutral-type behavior, depending on the dominant deformation mode and the nonlinear dependence of the stresslet for an optimum microswimmer on deformation mode and amplitude. |
| title | Swimmer-Types of Optimum Surface-Driven Active Particles |
| topic | Fluid Dynamics Soft Condensed Matter |
| url | https://arxiv.org/abs/2410.04100 |