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- W2067427657 abstract "EM Purcell proposed three-linked swimmer 60 years ago as a hypothetical creature capable of swimming in highly viscous fluid. We have constructed a scaled model of this swimmer to investigate reciprocal and non-reciprocal swimming motion. The links were programmatically rotated by the interactive servomotors controlled by a microcomputer. Reciprocal motion of the links produced no net displacement illustrating the effect of scallop theorem. Experiments on non-reciprocal motion captured very important property suggested by theories: small stroke angles cause forward swimming and large stroke angles backward. We have measured non-dimensional displacement per cycle and compared with the theoretical predictions and found consistent. Surprisingly, in low-frequency region, flapping frequency of the links also play a role in determining swimming direction. The low-Reynolds number swimming is characterised by Stokes equation which is linear and time-independent. But frequency dependence in low-frequency region shows the breakdown of Stokes law with inertia." @default.
- W2067427657 created "2016-06-24" @default.
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- W2067427657 date "2011-01-01" @default.
- W2067427657 modified "2023-10-16" @default.
- W2067427657 title "Robo-Linked Purcell's Swimmer" @default.
- W2067427657 doi "https://doi.org/10.1615/interjfluidmechres.v38.i6.90" @default.
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