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Vorticity Elongation in Sheared Polymeric Emulsions

Published

Author(s)

Erik K. Hobbie, Kalman D. Migler

Abstract

Stroboscopic video microscopy is used to study the shear-induced deformation of micron-size polystyrene droplets dispersed in a continuous phase of polyethylene. We observe a rich variety of droplet shapes as a function of shear rate and viscosity ratio that include droplets extended perpendicular to the flow field. A simple force-balance argument is presented that relates this novel behavior to the change in normal stress difference across the droplet interface.
Citation
Physical Review Letters
Volume
82

Keywords

deformation, polymer droplets, polymer matrix, shear flow

Citation

Hobbie, E. and Migler, K. (1999), Vorticity Elongation in Sheared Polymeric Emulsions, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851508 (Accessed September 27, 2023)
Created January 1, 1999, Updated February 17, 2017