Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 10: Wetting, Micro and Nanofluidics
CPP 10.4: Vortrag
Montag, 31. März 2014, 15:45–16:00, ZEU 114
The Rayleigh-Plateau Instability on a Fiber Revisited - Influence of the Hydrodynamic Boundary Condition — •Sabrina Haefner1,4, Oliver Bäumchen2,4, Michael Benzaquen3, Thomas Salez3, Robert Peters4, Joshua McGraw1, Elie Raphaël3, Karin Jacobs1, and Kari Dalnoki-Veress3,4 — 1Saarland University, Experimental Physics, 66041 Saarbrücken, Germany — 2Max Planck Institute for Dynamics & Self-Organization, 37077 Göttingen, Germany — 3Laboratoire de Physico-Chimie Théorique, UMR CNRS Guliver 7083, ESPCI, Paris, France — 4McMaster University, Department of Physics and Astronomy, Hamilton L8S4M1, Canada
The Rayleigh-Plateau Instability (RPI) of a liquid column underlies a variety of hydrodynamic phenomena that can be observed in everyday life. In the classical case of a free liquid column, linear perturbation theory predicts characteristic rise-times and wavelengths. However, the description of a liquid layer on a fiber requires the consideration of the solid/liquid interface in addition to the free interface. In this study, we revisit the RPI of a viscous liquid layer on a solid fiber by varying the hydrodynamic boundary condition at the fiber/liquid interface. The rise of the amplitudes of the surface undulations is precisely tracked and the growth rate of the instability is determined for the different slip boundary conditions and compared to the theoretical models.