The presence of a very small amount of high molecular weight polymer significantly delays the pinch-off singularity of a drop of water falling from a faucet and leads to the formation of a long-lived cylindrical filament. In this Letter, we present experiments, numerical simulations, and theory which examines the pinch-off process in the presence of polymers. The numerical simulations are found to be in good agreement with experiment. As a test case, we establish the conditions under which a small bead remains on the filament; we find that the presence of a bead is due to the asymmetry induced by the self-similar pinch off of the droplet.
|Translated title of the contribution||Droplet detachment and satellite bead formation in viscoelastic fluids|
|Article number||Art. No. 164504|
|Journal||Physical Review Letters|
|Publication status||Published - Oct 2005|
Bibliographical notePublisher: American Physical Soc
Other identifier: IDS Number: 973YL