期刊
JOURNAL OF FLUID MECHANICS
卷 835, 期 -, 页码 444-470出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jfm.2017.662
关键词
Hele-Shaw flows; low-Reynolds-number flows; microfluidics
资金
- European Research Council [ERC SimCoMiCs 280117, ERC PaDyFlow 682367]
- Agence Nationale de la Recherche (ANR-DefHy)
- European Research Council [ERC SimCoMiCs 280117, ERC PaDyFlow 682367]
- Agence Nationale de la Recherche (ANR-DefHy)
We investigate the trajectories of rigid fibres as they are transported in a pressure-driven flow, at low Reynolds number, in shallow Hele-Shaw cells. The transverse confinement and the resulting viscous friction on these elongated objects, as well as the lateral confinement (i.e. the presence of lateral walls), lead to complex fibre trajectories that we characterize with a combination of microfluidic experiments and simulations using modified Brinkman equations. We show that the transported fibre behaves as an oscillator for which we obtain and analyse a complete state diagram.
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