Deformation of a free interface pierced by a tilted cylinder

Details Deformation of a free interface pierced by a tilted cylinder Deformation of a free interface pierced by a tilted cylinder

2012-03-06

arxiv.org/abs/1203.1117v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 5 figures

Scientific paper

We investigate the interaction between an infinite cylinder and a free fluid-fluid interface governed only by its surface tension. We study the deformation of an initially flat interface when it is deformed by the presence of a cylindrical object, tilted at an arbitrary angle, that the interface "totally wets". Our simulations predict all significant quantities such as the interface shape, the position of the contact line, and the force exerted by the interface on the cylinder. These results are compared with an experimental study of the penetration of a soap film by a cylindrical liquid jet. Good agreement is found and shows that, whatever the inclination, the force is always perpendicular to the plane of the interface, and its amplitude diverges as the inclination angle increases. Such results should bring new insights in both fluid and solid mechanics, from animal locomotion to surface micro-processing.

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