Issue
EPL
Volume 87, Number 2, July 2009
Article Number 26003
Number of page(s) 3
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/87/26003
Published online 30 July 2009
EPL, 87 (2009) 26003
DOI: 10.1209/0295-5075/87/26003

Regime transitions in the viscous catenary

A. Zylstra and C. Mitescu

Department of Physics, Pomona College - 610 N. College Ave., Claremont CA 91711, USA

cmitescu@pomona.edu

received 7 December 2008; accepted in final form 6 July 2009; published July 2009
published online 30 July 2009

Abstract
We present studies of the transition between two types of filament evolution in the viscous catenary. In particular we examine the dependence of the observed behavior on the viscosity of the fluid, the initial radius of filament created, and the total length of the fluid. The kinematic viscosity is varied over two orders of magnitude, the filament radius by one order of magnitude, and the filament length by a factor of 3. We observe a clear transition as the so-called catenary number, dependent on the filament radius and length, increases past a certain value, but with no dependence on the viscosity of the fluid. This is a confirmation of theoretical predictions over a significantly greater range of viscosities than previous experiments.

PACS
68.03.Cd - Surface tension and related phenomena.
68.03.Kn - Dynamics (capillary waves).
47.20.Gv - Viscous and viscoelastic instabilities.

© EPLA 2009