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Rheologica Acta
Published in: Rheologica Acta 6/2004

01-12-2004 | Original Contribution

Newtonian drop in a Newtonian matrix subjected to large amplitude oscillatory shear flows

Authors: Stefano Guido, Massimiliano Grosso, Pier Luca Maffettone

Published in: Rheologica Acta | Issue 6/2004

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Abstract

The dynamics of a single Newtonian drop immersed in a Newtonian matrix subjected to large-amplitude oscillatory shear flow is investigated. The ratio of the drop and matrix viscosity is above criticality, and thus break-up is absent under constant shear flow. At small forcing amplitudes the drop shape follows a “regular” oscillation. As the forcing amplitude increases, multipeaked oscillations of drop shape and orientation are observed. Experimental results are compared with predictions obtained with a phenomenological model. Model predictions are in qualitative good agreement with experimental data. The model suggests that the appearance of higher harmonics in the drop response is mainly due to flow nonaffinity.
next article Effect of droplet size on the rheological properties of highly-concentrated w/o emulsions

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Metadata
Title
Newtonian drop in a Newtonian matrix subjected to large amplitude oscillatory shear flows
Authors
Stefano Guido
Massimiliano Grosso
Pier Luca Maffettone
Publication date
01-12-2004
Publisher
Springer-Verlag
Published in
Rheologica Acta / Issue 6/2004
Print ISSN: 0035-4511
Electronic ISSN: 1435-1528
DOI
https://doi.org/10.1007/s00397-004-0388-1

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