TY - JOUR
T1 - Relative viscosity of emulsions in simple shear flow
T2 - Temperature, shear rate, and interfacial tension dependence
AU - Choi, Se Bin
AU - Lee, Joon Sang
N1 - Publisher Copyright:
© 2015 The Korean Society of Mechanical Engineers.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2015/8
Y1 - 2015/8
N2 - We simulate an emulsion system under simple shear rates to analyze its rheological characteristics using the lattice Boltzmann method (LBM). We calculate the relative viscosity of an emulsion under a simple shear flow along with changes in temperature, shear rate, and surfactant concentration. The relative viscosity of emulsions decreased with an increase in temperature. We observed the shear-thinning phenomena, which is responsible for the inverse proportion between the shear rate and viscosity. An increase in the interfacial tension caused a decrease in the relative viscosity of the decane-in-water emulsion because the increased deformation caused by the decreased interfacial tension significantly influenced the wall shear stress.
AB - We simulate an emulsion system under simple shear rates to analyze its rheological characteristics using the lattice Boltzmann method (LBM). We calculate the relative viscosity of an emulsion under a simple shear flow along with changes in temperature, shear rate, and surfactant concentration. The relative viscosity of emulsions decreased with an increase in temperature. We observed the shear-thinning phenomena, which is responsible for the inverse proportion between the shear rate and viscosity. An increase in the interfacial tension caused a decrease in the relative viscosity of the decane-in-water emulsion because the increased deformation caused by the decreased interfacial tension significantly influenced the wall shear stress.
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U2 - 10.3795/KSME-B.2015.39.8.677
DO - 10.3795/KSME-B.2015.39.8.677
M3 - Article
AN - SCOPUS:84964238175
VL - 39
SP - 677
EP - 682
JO - Transactions of the Korean Society of Mechanical Engineers, B
JF - Transactions of the Korean Society of Mechanical Engineers, B
SN - 1226-4881
IS - 8
ER -