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Experiments in Fluids

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01-09-2013 | Research Article

3D characterization of the inner flow in an oscillating drop

Authors: Virginia Palero, Julia Lobera, Philippe Brunet, Nieves Andrés, Mª Pilar Arroyo

Published in: Experiments in Fluids | Issue 9/2013

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Abstract

In this work, measurements of the velocity field inside a vertically shaken drop are presented. The drop-wetting condition is slightly hydrophobic. The drop is sandwiched between two horizontal glass plates in order to allow a good visualization. Digital in-line holography is utilized to access the three-dimensional flow inside the drop. When shaken, the drop experiences several transitions of its dynamics and shape: At low amplitude, its contact line is pinned and when the amplitude overcomes a threshold, it becomes unpinned. At even higher amplitude, the drop shows the faceted shape of a star. The obtained velocity vector maps are related to the transition in dynamics and shape.

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Title: 3D characterization of the inner flow in an oscillating drop
Authors: Virginia Palero
Julia Lobera
Philippe Brunet
Nieves Andrés
Mª Pilar Arroyo
Publication date: 01-09-2013
Publisher: Springer Berlin Heidelberg
Published in: Experiments in Fluids / Issue 9/2013
Print ISSN: 0723-4864
Electronic ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-013-1568-5

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