title: Encapsulated drop breakup in shear flow.
abstract: We investigate the deformation and breakup in shear flow of an encapsulated drop in which both the core and shell are Newtonian fluids. The equations of motion are solved numerically using a level set method to track interface motion. We consider the case of a drop stretched to a given length in constant shear and then allowed to relax. A range of morphologies is produced, and novel kinematics occur, due to the interaction of the core and outer interfaces. A phase diagram is presented to describe the morphologies produced over a range of capillary numbers and core interfacial tensions.
authors.affiliation: Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Smith
authors.forename: J M
authors.initials: JM
authors.lastname: Ottino
authors.forename: M
authors.initials: M
authors.lastname: Olvera de la Cruz