dorsal/arxiv
View SchemaPolymeric filament thinning and breakup in microchannels
| Authors | P. E. Arratia, J. P. Gollub, D. J. Durian |
|---|---|
| Categories | |
| ArXiv ID | physics/0703161 |
| URL | https://arxiv.org/abs/physics/0703161 |
| DOI | 10.1103/PhysRevE.77.036309 |
| Journal | Physical Review E 77, 036309 (2008) |
Abstract
The effects of elasticity on filament thinning and breakup are investigated in microchannel cross flow. When a viscous solution is stretched by an external immiscible fluid, a low 100 ppm polymer concentration strongly affects the breakup process, compared to the Newtonian case. Qualitatively, polymeric filaments show much slower evolution, and their morphology features multiple connected drops. Measurements of filament thickness show two main temporal regimes: flow- and capillary-driven. At early times both polymeric and Newtonian fluids are flow-driven, and filament thinning is exponential. At later times, Newtonian filament thinning crosses over to a capillary-driven regime, in which the decay is algebraic. By contrast, the polymeric fluid first crosses over to a second type of flow-driven behavior, in which viscoelastic stresses inside the filament become important and the decay is again exponential. Finally, the polymeric filament becomes capillary-driven at late times with algebraic decay. We show that the exponential flow thinning behavior allows a novel measurement of the extensional viscosities of both Newtonian and polymeric fluids.
{
"annotation_id": "98c9899b-8134-4d1e-a5da-2b6d10a61371",
"date_created": "2026-03-02T18:01:18.551000Z",
"date_modified": "2026-03-02T18:01:18.551000Z",
"file_hash": "bbe321719c0c69065184c477368b6babf1aecec20a1a5c1d40a0b0d840d242ab",
"private": false,
"record": {
"abstract": "The effects of elasticity on filament thinning and breakup are investigated\nin microchannel cross flow. When a viscous solution is stretched by an external\nimmiscible fluid, a low 100 ppm polymer concentration strongly affects the\nbreakup process, compared to the Newtonian case. Qualitatively, polymeric\nfilaments show much slower evolution, and their morphology features multiple\nconnected drops. Measurements of filament thickness show two main temporal\nregimes: flow- and capillary-driven. At early times both polymeric and\nNewtonian fluids are flow-driven, and filament thinning is exponential. At\nlater times, Newtonian filament thinning crosses over to a capillary-driven\nregime, in which the decay is algebraic. By contrast, the polymeric fluid first\ncrosses over to a second type of flow-driven behavior, in which viscoelastic\nstresses inside the filament become important and the decay is again\nexponential. Finally, the polymeric filament becomes capillary-driven at late\ntimes with algebraic decay. We show that the exponential flow thinning behavior\nallows a novel measurement of the extensional viscosities of both Newtonian and\npolymeric fluids.",
"arxiv_id": "physics/0703161",
"authors": [
"P. E. Arratia",
"J. P. Gollub",
"D. J. Durian"
],
"categories": [
"physics.flu-dyn",
"cond-mat.soft"
],
"doi": "10.1103/PhysRevE.77.036309",
"journal_ref": "Physical Review E 77, 036309 (2008)",
"title": "Polymeric filament thinning and breakup in microchannels",
"url": "https://arxiv.org/abs/physics/0703161"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "3977ed9a-ade9-4a27-a812-0de95c54b61a",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}