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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.
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 October 13, 2025)