2018
DOI: 10.1017/jfm.2018.416
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Rotation of a low-Reynolds-number watermill: theory and simulations

Abstract: Recent experiments have demonstrated that small-scale rotary devices installed in a microfluidic channel can be driven passively by the underlying flow alone without resorting to conventionally applied magnetic or electric fields. In this work, we conduct a theoretical and numerical study on such a flow-driven "watermill" at low Reynolds number, focusing on its hydrodynamic features. We model the watermill by a collection of equally-spaced rigid rods. Based on the classical resistive force (RF) theory and dire… Show more

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Cited by 2 publications
(1 citation statement)
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“…Generally, due to the reduced dimensionality, any device has to obey the mechanics of Stokes regime in order to produce any useful motion [5]. This problem was succinctly formulated [6] and is being addressed theoretically [7], [8] and experimentally [9], [10], [11] by a number of research groups. In our own research effort, an investigation based on magnetic materials, has led to a concept of a ferromagnetic swimmer [12], [13].…”
Section: Introductionmentioning
confidence: 99%
“…Generally, due to the reduced dimensionality, any device has to obey the mechanics of Stokes regime in order to produce any useful motion [5]. This problem was succinctly formulated [6] and is being addressed theoretically [7], [8] and experimentally [9], [10], [11] by a number of research groups. In our own research effort, an investigation based on magnetic materials, has led to a concept of a ferromagnetic swimmer [12], [13].…”
Section: Introductionmentioning
confidence: 99%