| Autor: |
Trouilloud, Renaud, Yu, Tony S., Hosoi, A. E., Lauga, Eric |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. (2008) 101, 048102 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.101.048102 |
| Popis: |
Reciprocal movement cannot be used for locomotion at low-Reynolds number in an infinite fluid or near a rigid surface. Here we show that this limitation is relaxed for a body performing reciprocal motions near a deformable interface. Using physical arguments and scaling relationships, we show that the nonlinearities arising from reciprocal flow-induced interfacial deformation rectify the periodic motion of the swimmer, leading to locomotion. Such a strategy can be used to move toward, away from, and parallel to any deformable interface as long as the length scales involved are smaller than intrinsic scales, which we identify. A macro-scale experiment of flapping motion near a free surface illustrates this new result. |
| Databáze: |
arXiv |
| Externí odkaz: |
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