Anomalous boundary behavior in non-newtonian fluids at amphiphobic surfaces
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
In this work, the effect of amphiphobic surfaces on the rheological behavior and boundary slip of the shear thickening fluids (STFs) was investigated. The experimental results suggested the viscosities were diminished, shear thickening was delayed and weakened, and an ultrahigh drag reduction was obtained. Furthermore, slip length was observed to vary with shear rate. Dissipative particle dynamics (DPD) simulations were adopted to further investigate these specific rheology and slip behavior. The simulation results conformed with experiments and established a linear relationship between the slip length and viscosity. We consider this study could be a conducive practical reference for the investigation of boundary slip in complex fluids and possibly a crucial protocol for analyzing STFs’ manipulation.
Date Issued
2021-09-24
Date Acceptance
2021-09-02
Citation
Tribology International, 2021, 165, pp.1-7
ISSN
0301-679X
Publisher
Elsevier BV
Start Page
1
End Page
7
Journal / Book Title
Tribology International
Volume
165
Copyright Statement
© Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://www.sciencedirect.com/science/article/pii/S0301679X21004096?via%3Dihub
Grant Number
EP/N025954/1
Subjects
Science & Technology
Technology
Engineering, Mechanical
Engineering
Shear thickening fluid
Boundary slip
Drag reduction
Slip length
Amphiphobic surface
SUPERHYDROPHOBIC SURFACES
SPHERES
SLIP
SIMULATIONS
DEPENDENCE
PARTICLES
GROWTH
AIR
Mechanical Engineering & Transports
0910 Manufacturing Engineering
0913 Mechanical Engineering
Publication Status
Published
Article Number
107261
Date Publish Online
2021-09-10