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Oscillations of confined fibres transported in microchannels

Author(s): Nagel, M; Brun, PT; Berthet, H; Lindner, A; Gallaire, F; et al

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Abstract: We investigate the trajectories of rigid fibers 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 fibers trajectories that we characterize with a combination of microfluidic experiments and simulations using modified Brinkman equations. We show that the transported fiber behaves as an oscillator for which we obtain and analyze a complete state diagram.
Publication Date: 27-Nov-2017
Citation: Nagel, M, Brun, PT, Berthet, H, Lindner, A, Gallaire, F, Duprat, C. (2017). Oscillations of confined fibres transported in microchannels. Journal of Fluid Mechanics, 444 - 470. doi:10.1017/jfm.2017.662
DOI: doi:10.1017/jfm.2017.662
ISSN: 0022-1120
EISSN: 1469-7645
Pages: 444 - 470
Type of Material: Journal Article
Journal/Proceeding Title: Journal of Fluid Mechanics
Version: Author's manuscript

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