Hydrodynamic and Contact Contributions to Continuous Shear Thickening in Colloidal Suspensions.
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Lin, Neil YC
Guy, Ben M
Hermes, Michiel
Ness, Christopher https://orcid.org/0000-0002-0842-2537
Sun, Jin
Abstract
Shear thickening is a widespread phenomenon in suspension flow that, despite sustained study, is still the subject of much debate. The longstanding view that shear thickening is due to hydrodynamic clusters has been challenged by recent theory and simulations suggesting that contact forces dominate, not only in discontinuous, but also in continuous shear thickening. Here, we settle this dispute using shear reversal experiments on micron-sized silica and latex particles to measure directly the hydrodynamic and contact force contributions to shear thickening. We find that contact forces dominate even continuous shear thickening. Computer simulations show that these forces most likely arise from frictional interactions.
Description
Keywords
cond-mat.soft, cond-mat.soft, physics.flu-dyn
Journal Title
Phys Rev Lett
Conference Name
Journal ISSN
0031-9007
1079-7114
1079-7114
Volume Title
115
Publisher
American Physical Society (APS)
Publisher DOI
Sponsorship
Engineering and Physical Sciences Research Council (EP/J007404/1)